#Test:"must" abilities [INIT] FIRSTMAIN [PLAYER1] manapool:{3}{W} hand:Aven Cloudchaser inplay:lifeforce [PLAYER2] [DO] Aven cloudchaser choice 0 lifeforce [ASSERT] FIRSTMAIN [PLAYER1] inplay:aven cloudchaser graveyard:lifeforce [PLAYER2] [END]