Rev, Orbital Tithekeeper

Whenever you attack, target creature gains deathtouch until end of turn. Whenever one or more creatures you control deal combat damage to a player, create a Treasure token, then look at the top card of that player’s library and exile it face down. You may cast that card for as long as it remains exiled.{Lns}(A Treasure token is an artifact with “{T}, Sacrifice this token: Add one mana of any color.”){/fontsize-20}