Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.), Haste (This creature can attack, and as soon as it comes under your control.) Whenever a creature you control deals combat damage to a player, exile the top card of that player's library. It perpetually becomes an artifact if it's a nonland permanent card. Until end of turn, you may play the exiled card. , Sacrifice an artifact: Add three mana of any one color.