Bane

Whenever Bane enters the battlefield, choose a creature type. Whenever a creature you control blocks or is blocked by a creature of that type, it gets +X/+X, where X is your creatures power, until the end of the turn.

When a creature of the chosen type dies you may
pay {2}, if you do, draw a card.

{2}{u}: Exile Bane. Return it to the battlefield under your control at the beginning of your upkeep.