diff --git a/data/sql/updates/pending_db_world/rev_1664500389792248200.sql b/data/sql/updates/pending_db_world/rev_1664500389792248200.sql
new file mode 100644
index 000000000..155250a7d
--- /dev/null
+++ b/data/sql/updates/pending_db_world/rev_1664500389792248200.sql
@@ -0,0 +1,27 @@
+--
+UPDATE `creature_template` SET `AIName`='', `ScriptName`='npc_violet_hold_defense_system' WHERE `entry`=30837;
+
+DELETE FROM `smart_scripts` WHERE (`source_type` = 0 AND `entryorguid` = 30837);
+
+DELETE FROM `conditions` WHERE `SourceTypeOrReferenceId`=13 and `SourceEntry` IN (57912, 57930, 58152);
+INSERT INTO `conditions` (`SourceTypeOrReferenceId`,`SourceGroup`,`SourceEntry`,`SourceId`,`ElseGroup`,`ConditionTypeOrReference`,`ConditionTarget`,`ConditionValue1`,`ConditionValue2`,`ConditionValue3`,`NegativeCondition`,`ErrorType`,`ErrorTextId`,`ScriptName`,`Comment`) VALUES
+(13,1,57912,0,0,31,0,3,29425,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,57930,0,0,31,0,3,30857,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,0,31,0,3,30661,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,1,31,0,3,30662,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,2,31,0,3,30663,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,3,31,0,3,30664,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,4,31,0,3,30665,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,5,31,0,3,30666,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,6,31,0,3,30667,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,7,31,0,3,30668,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,8,31,0,3,30918,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,9,31,0,3,30961,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,10,31,0,3,30962,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,11,31,0,3,30963,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,12,31,0,3,31007,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,13,31,0,3,31008,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,14,31,0,3,31009,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,15,31,0,3,31010,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,16,31,0,3,31118,0,0,0,0,'','Defense System - Arcane Lightning'),
+(13,1,58152,0,17,31,0,3,32191,0,0,0,0,'','Defense System - Arcane Lightning');
diff --git a/src/server/scripts/Northrend/VioletHold/violet_hold.cpp b/src/server/scripts/Northrend/VioletHold/violet_hold.cpp
index 14c20d02f..72c88e7bc 100644
--- a/src/server/scripts/Northrend/VioletHold/violet_hold.cpp
+++ b/src/server/scripts/Northrend/VioletHold/violet_hold.cpp
@@ -1184,6 +1184,36 @@ public:
     }
 };
 
+struct npc_violet_hold_defense_system : public ScriptedAI
+{
+    npc_violet_hold_defense_system(Creature* creature) : ScriptedAI(creature) { }
+
+    void Reset() override
+    {
+        DoCast(RAND(SPELL_DEFENSE_SYSTEM_SPAWN_EFFECT, SPELL_DEFENSE_SYSTEM_VISUAL));
+        events.ScheduleEvent(EVENT_ARCANE_LIGHTNING, 4s);
+        events.ScheduleEvent(EVENT_ARCANE_LIGHTNING_INSTAKILL, 4s);
+        me->DespawnOrUnsummon(7s, 0s);
+    }
+
+    void UpdateAI(uint32 diff) override
+    {
+        events.Update(diff);
+
+        switch (events.ExecuteEvent())
+        {
+            case EVENT_ARCANE_LIGHTNING:
+                DoCastAOE(RAND(SPELL_ARCANE_LIGHTNING, SPELL_ARCANE_LIGHTNING_VISUAL));
+                events.RepeatEvent(2000);
+                break;
+            case EVENT_ARCANE_LIGHTNING_INSTAKILL:
+                DoCastAOE(SPELL_ARCANE_LIGHTNING_INSTAKILL);
+                events.RepeatEvent(1000);
+                break;
+        }
+    }
+};
+
 void AddSC_violet_hold()
 {
     new go_vh_activation_crystal();
@@ -1201,4 +1231,5 @@ void AddSC_violet_hold()
     new npc_azure_stalker();
 
     new spell_destroy_door_seal();
+    RegisterCreatureAI(npc_violet_hold_defense_system);
 }
diff --git a/src/server/scripts/Northrend/VioletHold/violet_hold.h b/src/server/scripts/Northrend/VioletHold/violet_hold.h
index 84d3baa14..65d0723d4 100644
--- a/src/server/scripts/Northrend/VioletHold/violet_hold.h
+++ b/src/server/scripts/Northrend/VioletHold/violet_hold.h
@@ -98,13 +98,16 @@ enum VHWorldStates
 
 enum Spells
 {
-    SPELL_CONTROL_CRYSTAL_ACTIVATION = 57804,
-    SPELL_ARCANE_LIGHTNING          = 57912,
-    SPELL_ARCANE_LIGHTNING_VISUAL   = 57930,
-    SPELL_PORTAL_CHANNEL            = 58012,
-    SPELL_DESTROY_DOOR_SEAL         = 58040,
-    SPELL_CYANIGOSA_TRANSFORM       = 58668,
-    SPELL_CYANIGOSA_BLUE_AURA       = 45870,
+    SPELL_CONTROL_CRYSTAL_ACTIVATION   = 57804,
+    SPELL_DEFENSE_SYSTEM_SPAWN_EFFECT  = 57886,
+    SPELL_DEFENSE_SYSTEM_VISUAL        = 57887,
+    SPELL_ARCANE_LIGHTNING             = 57912,
+    SPELL_ARCANE_LIGHTNING_VISUAL      = 57930,
+    SPELL_ARCANE_LIGHTNING_INSTAKILL   = 58152,
+    SPELL_PORTAL_CHANNEL               = 58012,
+    SPELL_DESTROY_DOOR_SEAL            = 58040,
+    SPELL_CYANIGOSA_TRANSFORM          = 58668,
+    SPELL_CYANIGOSA_BLUE_AURA          = 45870
 };
 
 enum Events
@@ -117,6 +120,10 @@ enum Events
     EVENT_SUMMON_PORTAL,
     EVENT_CYANIGOSSA_TRANSFORM,
     EVENT_CYANIGOSA_ATTACK,
+
+    // Event defense system
+    EVENT_ARCANE_LIGHTNING,
+    EVENT_ARCANE_LIGHTNING_INSTAKILL
 };
 
 enum Data