diff --git a/data/sql/updates/pending_db_world/root_totem.sql b/data/sql/updates/pending_db_world/root_totem.sql
new file mode 100644
index 000000000..77acc4594
--- /dev/null
+++ b/data/sql/updates/pending_db_world/root_totem.sql
@@ -0,0 +1,4 @@
+--
+DELETE FROM `creature_template_movement` WHERE `CreatureId` = 24224;
+INSERT INTO `creature_template_movement` (`CreatureId`, `Flight`, `Rooted`) VALUES
+(24224, 1, 1);
diff --git a/src/server/scripts/EasternKingdoms/ZulAman/boss_halazzi.cpp b/src/server/scripts/EasternKingdoms/ZulAman/boss_halazzi.cpp
index 6dd0b436c..53d2c3d2d 100644
--- a/src/server/scripts/EasternKingdoms/ZulAman/boss_halazzi.cpp
+++ b/src/server/scripts/EasternKingdoms/ZulAman/boss_halazzi.cpp
@@ -37,9 +37,13 @@ enum Spells
     SPELL_SHRED_ARMOR           = 43243  // Used by Spirit Lynx
 };
 
+enum UniqueEvents
+{
+    EVENT_BERSERK               = 0
+};
+
 enum Hal_CreatureIds
 {
-    NPC_SPIRIT_LYNX             = 24143,
     NPC_TOTEM                   = 24224
 };
 
@@ -63,326 +67,274 @@ enum Yells
     SAY_DEATH                   = 5
 };
 
-class boss_halazzi : public CreatureScript
+enum Groups
 {
-public:
-    boss_halazzi() : CreatureScript("boss_halazzi") { }
+    GROUP_LYNX                  = 0,
+    GROUP_HUMAN                 = 1,
+    GROUP_MERGE                 = 2
+};
 
-    struct boss_halazziAI : public ScriptedAI
+struct boss_halazzi : public BossAI
+{
+    boss_halazzi(Creature* creature) : BossAI(creature, DATA_HALAZZIEVENT)
     {
-        boss_halazziAI(Creature* creature) : ScriptedAI(creature), summons(me)
+        scheduler.SetValidator([this]
         {
-            instance = creature->GetInstanceScript();
+            return !me->HasUnitState(UNIT_STATE_CASTING);
+        });
+    }
+
+    void Reset() override
+    {
+        BossAI::Reset();
+        _transformCount = 0;
+        _healthCheckPercentage = 0;
+        _phase = PHASE_NONE;
+        _lynxFormHealth = me->GetMaxHealth();
+        _healthPortion = _lynxFormHealth/4;
+        _humanFormHealth = (me->GetMaxHealth())/0.66666666;
+        EnterPhase(PHASE_LYNX);
+        DoCastSelf(SPELL_DUAL_WIELD, true);
+    }
+
+    void JustSummoned(Creature* summon) override
+    {
+        BossAI::JustSummoned(summon);
+        summon->Attack(me->GetVictim(), false);
+        summon->SetInCombatWithZone();
+    }
+
+    void JustEngagedWith(Unit* who) override
+    {
+        BossAI::JustEngagedWith(who);
+        Talk(SAY_AGGRO);
+        ScheduleUniqueTimedEvent(10min, [&]
+        {
+            DoCastSelf(SPELL_BERSERK, true);
+        }, EVENT_BERSERK);
+        EnterPhase(PHASE_LYNX);
+    }
+
+    void DamageTaken(Unit* /*attacker*/, uint32& damage, DamageEffectType /*damagetype*/, SpellSchoolMask /*damageSchoolMask*/) override
+    {
+        if (damage >= me->GetHealth() && _phase != PHASE_ENRAGE)
+        {
+            damage = 0;
         }
-
-        InstanceScript* instance;
-        SummonList summons;
-        PhaseHalazzi Phase;
-
-        uint32 FrenzyTimer;
-        uint32 SaberlashTimer;
-        uint32 ShockTimer;
-        uint32 TotemTimer;
-        uint32 CheckTimer;
-        uint32 BerserkTimer;
-        uint32 TransformCount;
-
-        ObjectGuid LynxGUID;
-
-        void Reset() override
+        else
         {
-            instance->SetData(DATA_HALAZZIEVENT, NOT_STARTED);
-            summons.DespawnAll();
-
-            LynxGUID.Clear();
-            TransformCount = 0;
-            BerserkTimer = 600000;
-            CheckTimer = 1000;
-
-            DoCast(me, SPELL_DUAL_WIELD, true);
-
-            Phase = PHASE_NONE;
-            EnterPhase(PHASE_LYNX);
-        }
-
-        void JustEngagedWith(Unit* /*who*/) override
-        {
-            instance->SetData(DATA_HALAZZIEVENT, IN_PROGRESS);
-            Talk(SAY_AGGRO);
-            EnterPhase(PHASE_LYNX);
-        }
-
-        void JustSummoned(Creature* summon) override
-        {
-            summon->AI()->AttackStart(me->GetVictim());
-            if (summon->GetEntry() == NPC_SPIRIT_LYNX)
-                LynxGUID = summon->GetGUID();
-            summons.Summon(summon);
-        }
-
-        void DamageTaken(Unit*, uint32& damage, DamageEffectType, SpellSchoolMask) override
-        {
-            if (damage >= me->GetHealth() && Phase != PHASE_ENRAGE)
-                damage = 0;
-        }
-
-        void SpellHit(Unit*, SpellInfo const* spell) override
-        {
-            if (spell->Id == SPELL_TRANSFORM_SPLIT2)
-                EnterPhase(PHASE_HUMAN);
-        }
-
-        void AttackStart(Unit* who) override
-        {
-            if (Phase != PHASE_MERGE)
-                ScriptedAI::AttackStart(who);
-        }
-
-        void EnterPhase(PhaseHalazzi NextPhase)
-        {
-            switch (NextPhase)
+            if (_phase == PHASE_LYNX || _phase == PHASE_ENRAGE)
             {
-                case PHASE_LYNX:
-                case PHASE_ENRAGE:
-                    if (Phase == PHASE_MERGE)
-                    {
-                        DoCast(me, SPELL_TRANSFORM_MERGE, true);
-                        me->Attack(me->GetVictim(), true);
-                        me->GetMotionMaster()->MoveChase(me->GetVictim());
-                    }
-                    if (Creature* Lynx = ObjectAccessor::GetCreature(*me, LynxGUID))
-                        Lynx->DisappearAndDie();
-                    me->SetMaxHealth(600000);
-                    me->SetHealth(600000 - 150000 * TransformCount);
-                    FrenzyTimer = 16000;
-                    SaberlashTimer = 20000;
-                    ShockTimer = 10000;
-                    TotemTimer = 12000;
-                    break;
-                case PHASE_SPLIT:
-                    Talk(SAY_SPLIT);
-                    DoCast(me, SPELL_TRANSFORM_SPLIT, true);
-                    break;
-                case PHASE_HUMAN:
-                    //DoCast(me, SPELL_SUMMON_LYNX, true);
-                    DoSpawnCreature(NPC_SPIRIT_LYNX, 5, 5, 0, 0, TEMPSUMMON_CORPSE_DESPAWN, 0);
-                    me->SetMaxHealth(400000);
-                    me->SetHealth(400000);
-                    ShockTimer = 10000;
-                    TotemTimer = 12000;
-                    break;
-                case PHASE_MERGE:
-                    if (Unit* pLynx = ObjectAccessor::GetUnit(*me, LynxGUID))
-                    {
-                        Talk(SAY_MERGE);
-                        pLynx->SetUnitFlag(UNIT_FLAG_NON_ATTACKABLE);
-                        pLynx->GetMotionMaster()->Clear();
-                        pLynx->GetMotionMaster()->MoveFollow(me, 0, 0);
-                        me->GetMotionMaster()->Clear();
-                        me->GetMotionMaster()->MoveFollow(pLynx, 0, 0);
-                        ++TransformCount;
-                    }
-                    break;
-                default:
-                    break;
+                _healthCheckPercentage = 25 * (3 - _transformCount);
+                if (!HealthAbovePct(_healthCheckPercentage))
+                {
+                    EnterPhase(PHASE_SPLIT);
+                }
             }
-            Phase = NextPhase;
-        }
-
-        void UpdateAI(uint32 diff) override
-        {
-            if (!UpdateVictim())
-                return;
-
-            if (BerserkTimer <= diff)
+            else if (_phase == PHASE_HUMAN)
             {
-                DoCast(me, SPELL_BERSERK, true);
-                BerserkTimer = 60000;
+                if (Creature* lynx = instance->GetCreature(DATA_SPIRIT_LYNX))
+                {
+                    if (!HealthAbovePct(20) || !lynx->HealthAbovePct(20))
+                    {
+                        EnterPhase(PHASE_MERGE);
+                    }
+                }
+                else
+                {
+                    //should not really happen
+                    EnterEvadeMode();
+                }
             }
-            else BerserkTimer -= diff;
+        }
+    }
 
-            if (Phase == PHASE_LYNX || Phase == PHASE_ENRAGE)
-            {
-                if (SaberlashTimer <= diff)
+    void SpellHit(Unit*, SpellInfo const* spell) override
+    {
+        if (spell->Id == SPELL_TRANSFORM_SPLIT2)
+        {
+            EnterPhase(PHASE_HUMAN);
+        }
+    }
+
+    void AttackStart(Unit* who) override
+    {
+        if (_phase != PHASE_MERGE)
+        {
+            BossAI::AttackStart(who);
+        }
+    }
+
+    void EnterPhase(PhaseHalazzi nextPhase)
+    {
+        switch (nextPhase)
+        {
+            case PHASE_LYNX:
+            case PHASE_ENRAGE:
+                if (_phase == PHASE_MERGE)
+                {
+                    DoCastSelf(SPELL_TRANSFORM_MERGE, true);
+                    me->RemoveAurasDueToSpell(SPELL_TRANSFORM_SPLIT2);
+                    me->GetMotionMaster()->MoveChase(me->GetVictim());
+                }
+                summons.DespawnAll();
+                me->SetMaxHealth(_lynxFormHealth);
+                me->SetHealth(_lynxFormHealth - _healthPortion * _transformCount);
+                scheduler.CancelGroup(GROUP_MERGE);
+                scheduler.Schedule(16s, GROUP_LYNX, [this](TaskContext context)
+                {
+                    DoCastSelf(SPELL_FRENZY);
+                    context.Repeat(10s, 15s);
+                }).Schedule(20s, GROUP_LYNX, [this](TaskContext context)
                 {
                     Talk(SAY_SABER);
-                    // A tank with more than 490 defense skills should receive no critical hit
-                    //DoCast(me, 41296, true);
                     DoCastVictim(SPELL_SABER_LASH, true);
-                    //me->RemoveAurasDueToSpell(41296);
-                    SaberlashTimer = 30000;
-                }
-                else SaberlashTimer -= diff;
-
-                if (FrenzyTimer <= diff)
-                {
-                    DoCast(me, SPELL_FRENZY);
-                    FrenzyTimer = urand(10000, 15000);
-                }
-                else FrenzyTimer -= diff;
-
-                if (Phase == PHASE_LYNX)
-                {
-                    if (CheckTimer <= diff)
-                    {
-                        if (HealthBelowPct(25 * (3 - TransformCount)))
-                            EnterPhase(PHASE_SPLIT);
-                        CheckTimer = 1000;
-                    }
-                    else CheckTimer -= diff;
-                }
-            }
-
-            if (Phase == PHASE_HUMAN || Phase == PHASE_ENRAGE)
-            {
-                if (TotemTimer <= diff)
-                {
-                    DoCast(me, SPELL_SUMMON_TOTEM);
-                    TotemTimer = 20000;
-                }
-                else TotemTimer -= diff;
-
-                if (ShockTimer <= diff)
+                    context.Repeat(30s);
+                });
+                break;
+            case PHASE_SPLIT:
+                Talk(SAY_SPLIT);
+                DoCastSelf(SPELL_TRANSFORM_SPLIT, true);
+                break;
+            case PHASE_HUMAN:
+                scheduler.CancelGroup(GROUP_MERGE);
+                DoCastSelf(SPELL_SUMMON_LYNX, true);
+                me->SetMaxHealth(_humanFormHealth);
+                me->SetHealth(_humanFormHealth);
+                scheduler.CancelGroup(GROUP_LYNX);
+                scheduler.Schedule(10s, GROUP_HUMAN, [this](TaskContext context)
                 {
                     if (Unit* target = SelectTarget(SelectTargetMethod::Random, 0))
                     {
                         if (target->IsNonMeleeSpellCast(false))
+                        {
                             DoCast(target, SPELL_EARTHSHOCK);
+                        }
                         else
+                        {
                             DoCast(target, SPELL_FLAMESHOCK);
-                        ShockTimer = urand(10000, 15000);
-                    }
-                }
-                else ShockTimer -= diff;
-
-                if (Phase == PHASE_HUMAN)
-                {
-                    if (CheckTimer <= diff)
-                    {
-                        if (!HealthAbovePct(20) /*HealthBelowPct(10)*/)
-                            EnterPhase(PHASE_MERGE);
-                        else
-                        {
-                            Unit* Lynx = ObjectAccessor::GetUnit(*me, LynxGUID);
-                            if (Lynx && !Lynx->HealthAbovePct(20) /*Lynx->HealthBelowPct(10)*/)
-                                EnterPhase(PHASE_MERGE);
-                        }
-                        CheckTimer = 1000;
-                    }
-                    else CheckTimer -= diff;
-                }
-            }
-
-            if (Phase == PHASE_MERGE)
-            {
-                if (CheckTimer <= diff)
-                {
-                    Unit* Lynx = ObjectAccessor::GetUnit(*me, LynxGUID);
-                    if (Lynx)
-                    {
-                        Lynx->GetMotionMaster()->MoveFollow(me, 0, 0);
-                        me->GetMotionMaster()->MoveFollow(Lynx, 0, 0);
-                        if (me->IsWithinDistInMap(Lynx, 6.0f))
-                        {
-                            if (TransformCount < 3)
-                                EnterPhase(PHASE_LYNX);
-                            else
-                                EnterPhase(PHASE_ENRAGE);
                         }
                     }
-                    CheckTimer = 1000;
+                    context.Repeat(10s, 15s);
+                }).Schedule(12s, GROUP_HUMAN, [this](TaskContext context)
+                {
+                    DoCastSelf(SPELL_SUMMON_TOTEM);
+                    context.Repeat(20s);
+                });
+                break;
+            case PHASE_MERGE:
+                if (Creature* lynx = instance->GetCreature(DATA_SPIRIT_LYNX))
+                {
+                    Talk(SAY_MERGE);
+                    scheduler.CancelGroup(GROUP_HUMAN);
+                    lynx->SetUnitFlag(UNIT_FLAG_NON_ATTACKABLE);
+                    lynx->GetMotionMaster()->Clear();
+                    lynx->GetMotionMaster()->MoveFollow(me, 0, 0);
+                    me->GetMotionMaster()->Clear();
+                    me->GetMotionMaster()->MoveFollow(lynx, 0, 0);
+                    ++_transformCount;
+                    scheduler.Schedule(2s, GROUP_MERGE, [this](TaskContext context)
+                    {
+                        if (Creature* lynx = instance->GetCreature(DATA_SPIRIT_LYNX))
+                        {
+                            if (me->IsWithinDistInMap(lynx, 6.0f))
+                            {
+                                if (_transformCount < 3)
+                                {
+                                    EnterPhase(PHASE_LYNX);
+                                }
+                                else
+                                {
+                                    EnterPhase(PHASE_ENRAGE);
+                                }
+                            }
+                        }
+                        context.Repeat(2s);
+                    });
                 }
-                else CheckTimer -= diff;
-            }
-
-            DoMeleeAttackIfReady();
+                break;
+            default:
+                break;
         }
+        _phase = nextPhase;
+    }
 
-        void KilledUnit(Unit* victim) override
+    void KilledUnit(Unit* victim) override
+    {
+        BossAI::KilledUnit(victim);
+        if (victim->IsPlayer())
         {
-            if (victim->GetTypeId() != TYPEID_PLAYER)
-                return;
-
             Talk(SAY_KILL);
         }
-
-        void JustDied(Unit* /*killer*/) override
-        {
-            instance->SetData(DATA_HALAZZIEVENT, DONE);
-            Talk(SAY_DEATH);
-        }
-    };
-
-    CreatureAI* GetAI(Creature* creature) const override
-    {
-        return GetZulAmanAI<boss_halazziAI>(creature);
     }
+
+    void JustDied(Unit* killer) override
+    {
+        BossAI::JustDied(killer);
+        Talk(SAY_DEATH);
+    }
+private:
+    uint32 _lynxFormHealth;
+    uint32 _humanFormHealth;
+    uint32 _healthPortion;
+    uint8 _transformCount;
+    uint32 _healthCheckPercentage;
+    PhaseHalazzi _phase;
 };
-
 // Spirits Lynx AI
-class npc_halazzi_lynx : public CreatureScript
+struct npc_halazzi_lynx : public ScriptedAI
 {
-public:
-    npc_halazzi_lynx() : CreatureScript("npc_halazzi_lynx") { }
+    npc_halazzi_lynx(Creature* creature) : ScriptedAI(creature) { }
 
-    struct npc_halazzi_lynxAI : public ScriptedAI
+    void Reset() override
     {
-        npc_halazzi_lynxAI(Creature* creature) : ScriptedAI(creature) { }
+        scheduler.CancelAll();
+    }
 
-        uint32 FrenzyTimer;
-        uint32 shredder_timer;
-
-        void Reset() override
-        {
-            FrenzyTimer = urand(30000, 50000);  //frenzy every 30-50 seconds
-            shredder_timer = 4000;
-        }
-
-        void DamageTaken(Unit*, uint32& damage, DamageEffectType, SpellSchoolMask) override
-        {
-            if (damage >= me->GetHealth())
-                damage = 0;
-        }
-
-        void AttackStart(Unit* who) override
-        {
-            if (!me->HasUnitFlag(UNIT_FLAG_NON_ATTACKABLE))
-                ScriptedAI::AttackStart(who);
-        }
-
-        void JustEngagedWith(Unit* /*who*/) override {/*DoZoneInCombat();*/ }
-
-        void UpdateAI(uint32 diff) override
-        {
-            if (!UpdateVictim())
-                return;
-
-            if (FrenzyTimer <= diff)
-            {
-                DoCast(me, SPELL_LYNX_FRENZY);
-                FrenzyTimer = urand(30000, 50000);  //frenzy every 30-50 seconds
-            }
-            else FrenzyTimer -= diff;
-
-            if (shredder_timer <= diff)
-            {
-                DoCastVictim(SPELL_SHRED_ARMOR);
-                shredder_timer = 4000;
-            }
-            else shredder_timer -= diff;
-
-            DoMeleeAttackIfReady();
-        }
-    };
-
-    CreatureAI* GetAI(Creature* creature) const override
+    void DamageTaken(Unit* /*attacker*/, uint32& damage, DamageEffectType /*damagetype*/, SpellSchoolMask /*damageSchoolMask*/) override
     {
-        return GetZulAmanAI<npc_halazzi_lynxAI>(creature);
+        if (damage >= me->GetHealth())
+        {
+            damage = 0;
+        }
+    }
+
+    void AttackStart(Unit* who) override
+    {
+        if (!me->HasUnitFlag(UNIT_FLAG_NON_ATTACKABLE))
+        {
+            ScriptedAI::AttackStart(who);
+        }
+    }
+
+    void JustEngagedWith(Unit* who) override
+    {
+        ScriptedAI::JustEngagedWith(who);
+
+        ScheduleTimedEvent(30s, 50s, [&]
+        {
+            DoCastSelf(SPELL_LYNX_FRENZY);
+        }, 30s, 50s);
+        ScheduleTimedEvent(4s, [&]{
+            DoCastVictim(SPELL_SHRED_ARMOR);
+        }, 4s);
+    }
+
+    void UpdateAI(uint32 diff) override
+    {
+        if (!UpdateVictim())
+        {
+            return;
+        }
+
+        scheduler.Update(diff);
+
+        DoMeleeAttackIfReady();
     }
 };
 
 void AddSC_boss_halazzi()
 {
-    new boss_halazzi();
-    new npc_halazzi_lynx();
+    RegisterZulAmanCreatureAI(boss_halazzi);
+    RegisterZulAmanCreatureAI(npc_halazzi_lynx);
 }
diff --git a/src/server/scripts/EasternKingdoms/ZulAman/instance_zulaman.cpp b/src/server/scripts/EasternKingdoms/ZulAman/instance_zulaman.cpp
index ea7198184..baa83f557 100644
--- a/src/server/scripts/EasternKingdoms/ZulAman/instance_zulaman.cpp
+++ b/src/server/scripts/EasternKingdoms/ZulAman/instance_zulaman.cpp
@@ -55,6 +55,17 @@ static SHostageInfo HostageInfo[] =
 
 Position const HarrisonJonesLoc = {120.687f, 1674.0f, 42.0217f, 1.59044f};
 
+ObjectData const creatureData[] =
+{
+    { NPC_SPIRIT_LYNX, DATA_SPIRIT_LYNX },
+    { 0,               0                }
+};
+
+ObjectData const gameObjectData[] =
+{
+    { 0,               0                }
+};
+
 class instance_zulaman : public InstanceMapScript
 {
 public:
@@ -92,6 +103,7 @@ public:
         void Initialize() override
         {
             SetHeaders(DataHeader);
+            LoadObjectData(creatureData, gameObjectData);
             memset(&m_auiEncounter, 0, sizeof(m_auiEncounter));
 
             QuestTimer = 0;
@@ -135,6 +147,7 @@ public:
                 default:
                     break;
             }
+            InstanceScript::OnCreatureCreate(creature);
         }
 
         void OnGameObjectCreate(GameObject* go) override
diff --git a/src/server/scripts/EasternKingdoms/ZulAman/zulaman.h b/src/server/scripts/EasternKingdoms/ZulAman/zulaman.h
index d8a5fdd1c..4ca81145b 100644
--- a/src/server/scripts/EasternKingdoms/ZulAman/zulaman.h
+++ b/src/server/scripts/EasternKingdoms/ZulAman/zulaman.h
@@ -32,9 +32,10 @@ enum DataTypes
     DATA_HALAZZIEVENT                   = 4,
     DATA_HEXLORDEVENT                   = 5,
     DATA_ZULJINEVENT                    = 6,
-    DATA_CHESTLOOTED                    = 7,
-    TYPE_RAND_VENDOR_1                  = 8,
-    TYPE_RAND_VENDOR_2                  = 9
+    DATA_SPIRIT_LYNX                    = 7,
+    DATA_CHESTLOOTED                    = 8,
+    TYPE_RAND_VENDOR_1                  = 9,
+    TYPE_RAND_VENDOR_2                  = 10
 };
 
 enum CreatureIds
@@ -44,7 +45,8 @@ enum CreatureIds
     NPC_ZULJIN                          = 23863,
     NPC_HEXLORD                         = 24239,
     NPC_HALAZZI                         = 23577,
-    NPC_NALORAKK                        = 23576
+    NPC_NALORAKK                        = 23576,
+    NPC_SPIRIT_LYNX                     = 24143
 };
 
 enum GameobjectIds
@@ -68,4 +70,6 @@ inline AI* GetZulAmanAI(T* obj)
     return GetInstanceAI<AI>(obj, ZulAmanScriptName);
 }
 
+#define RegisterZulAmanCreatureAI(ai_name) RegisterCreatureAIWithFactory(ai_name, GetZulAmanAI)
+
 #endif