In the Hour of Twilight dungeon: on the BOSS [Arcurion] ( https://www.wowhead.com/npc=54590/arcurion ) when he casts the [Frozen Tomb] spell
( https://www.wowhead.com/spell=103252/icy-tomb ) to the target that is Thrall, the ice block comes out friendly so the characters cannot release it.
( https://www.wowhead.com/spell=103252/icy-tomb ) to the target that is Thrall, the ice block comes out friendly so the characters cannot release it.