In the Hour of Twilight dungeon: In the BOSS [Arcurion]
when he casts the spell [Frozen Tomb]
to the target, which is Thrall, the ice block comes out friendly which the characters cannot release.
Arcurion
Arcurion's icy grip reaches out at his current target, inflicting (100% of Spell power) Frost damage. Arcurion is a level 37 Elite NPC that can be found in Hour of Twilight.
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Icy Tomb
Encases the target in ice stunning them until the tomb is destroyed. In the NPC Abilities category. A spell from World of Warcraft: Cataclysm.
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