diff --git a/data/sql/updates/pending_db_world/rev_1720886969204406200.sql b/data/sql/updates/pending_db_world/rev_1720886969204406200.sql
new file mode 100644
index 000000000..9781acd1b
--- /dev/null
+++ b/data/sql/updates/pending_db_world/rev_1720886969204406200.sql
@@ -0,0 +1,5 @@
+--
+UPDATE`smart_scripts` SET `action_param1` = 39649 WHERE (`entryorguid` = 22855) AND (`source_type` = 0) AND (`id` = 3);
+
+DELETE FROM `spell_script_names` WHERE `spell_id`=39649 AND `ScriptName`='spell_black_temple_summon_shadowfiends';
+INSERT INTO `spell_script_names` (`spell_id`, `ScriptName`) VALUES (39649, 'spell_black_temple_summon_shadowfiends');
diff --git a/src/server/scripts/Outland/BlackTemple/black_temple.h b/src/server/scripts/Outland/BlackTemple/black_temple.h
index 491125714..e4febfe05 100644
--- a/src/server/scripts/Outland/BlackTemple/black_temple.h
+++ b/src/server/scripts/Outland/BlackTemple/black_temple.h
@@ -115,7 +115,8 @@ enum MiscIds
     SPELL_SHADOW_INFERNO_DAMAGE     = 39646,
     SPELL_CHAOTIC_CHARGE            = 41033,
     SPELL_DEMENTIA1                 = 41406,
-    SPELL_DEMENTIA2                 = 41409
+    SPELL_DEMENTIA2                 = 41409,
+    SPELL_SUMMON_SHADOWFIENDS       = 41159
 };
 
 template <class AI, class T>
diff --git a/src/server/scripts/Outland/BlackTemple/instance_black_temple.cpp b/src/server/scripts/Outland/BlackTemple/instance_black_temple.cpp
index 61f774c5b..a7c6d7011 100644
--- a/src/server/scripts/Outland/BlackTemple/instance_black_temple.cpp
+++ b/src/server/scripts/Outland/BlackTemple/instance_black_temple.cpp
@@ -458,6 +458,32 @@ class spell_black_temple_dementia_aura : public AuraScript
     }
 };
 
+// 39649 - Summon Shadowfiends
+class spell_black_temple_summon_shadowfiends : public SpellScript
+{
+    PrepareSpellScript(spell_black_temple_summon_shadowfiends);
+
+    bool Validate(SpellInfo const* /*spellInfo*/) override
+    {
+        return ValidateSpellInfo({ SPELL_SUMMON_SHADOWFIENDS });
+    }
+
+    void HandleScriptEffect(SpellEffIndex /*effIndex*/)
+    {
+        Unit* caster = GetCaster();
+        if (!caster)
+            return;
+
+        for (uint8 i = 0; i < 11; i++)
+            caster->CastSpell(caster, SPELL_SUMMON_SHADOWFIENDS, true);
+    }
+
+    void Register() override
+    {
+        OnEffectHitTarget += SpellEffectFn(spell_black_temple_summon_shadowfiends::HandleScriptEffect, EFFECT_0, SPELL_EFFECT_SCRIPT_EFFECT);
+    }
+};
+
 void AddSC_instance_black_temple()
 {
     new instance_black_temple();
@@ -473,5 +499,6 @@ void AddSC_instance_black_temple()
     RegisterSpellScript(spell_black_temple_consuming_strikes_aura);
     RegisterSpellScript(spell_black_temple_curse_of_vitality_aura);
     RegisterSpellScript(spell_black_temple_dementia_aura);
+    RegisterSpellScript(spell_black_temple_summon_shadowfiends);
 }