(Gain the next level as a sorcery to add its ability)

Whenever a creature you control deals combat damage to a player, exile the top card of that player's library face down. You may look at it for as long as it remains exiled.

1UB Level 2— Creatures you control have menace.

2UB Level 3— You may play cards exiled with Rogue Class, and you may spend mana as though it were mana of any color to cast those spells.