From 03c32793955a63f020f3834ce95cab85938697c9 Mon Sep 17 00:00:00 2001
From: ariel- <ariel-@users.noreply.github.com>
Date: Mon, 7 Nov 2016 13:32:16 -0300
Subject: [PATCH] Core/Gameobject: remove immune flags from trigger used to
 cast GO spells

Spells were failing flags check in Unit::_IsValidAttackTarget

Closes #18206
---
 src/server/game/Entities/GameObject/GameObject.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/server/game/Entities/GameObject/GameObject.cpp b/src/server/game/Entities/GameObject/GameObject.cpp
index 112c4ae9be..d08df3b66b 100644
--- a/src/server/game/Entities/GameObject/GameObject.cpp
+++ b/src/server/game/Entities/GameObject/GameObject.cpp
@@ -1886,6 +1886,9 @@ void GameObject::CastSpell(Unit* target, uint32 spellId, TriggerCastFlags trigge
     if (!trigger)
         return;
 
+    // remove immunity flags, to allow spell to target anything
+    trigger->RemoveFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_IMMUNE_TO_NPC | UNIT_FLAG_IMMUNE_TO_PC);
+
     if (Unit* owner = GetOwner())
     {
         trigger->setFaction(owner->getFaction());