Cad Bane

Flying
Once on each of your turns, you may cast instants and
sorceries from an opponent’s graveyard if their mana
value is less than or equal to the number of bounty
counters they have. Use mana of any color to cast them.
Exile those cards afterward.

When Cad Bane deals damage to a creature without a
bounty counter put a bounty counter on that creature.

{2}{r}{t}: Cad bane deals 1 damage to target tapped creature.