Lifelink, toxic 1

Whenever you proliferate, choose one —

• If you don't control a creature named The Hollow Sentinel, create The Hollow Sentinel, a legendary 3/3 colorless Phyrexian Golem artifact creature token.

• Target artifact creature you control gains flying and lifelink until end of turn.

+2: Exile target permanent you own. Return it to the battlefield under your control at the beginning of the next end step.

−1: Creatures can't be blocked this turn.

−8: You get an emblem with "Whenever you cast a spell, exile target permanent."

You have no maximum hand size.

At the beginning of your upkeep, you gain 1 life for each card in your hand.