United in Stormwind Cards List & Guide
At the end of your turn, replace all other minions with new ones of the same Cost.
i would find a way to play this card. some of the 10 cost boss minions from the League of explorers look actually fun as legendaries to have. obviously being BGH targets does make them somewhat interesting but even this ability as a tavern brawl sounds awesome.
they had one a while ago with rafaam vs kt