Kafka, Soul Whisperer

Once per turn when you cast a spell, gain control of target creature you don't control until the end of the turn. Untap that creature. It gains haste until the end of your turn.

Whenever a creature you control but don't own deals combat damage to an opponent, exile the top card of each player's library. You may play them for as long as they remain exiled. Create two treasures.

"Playing the violin and firing a gun both require flexible fingers, but bullets are more obedient."
- Kafka, Soul