Greed's Gambit

When Greed's Gambit enters the battlefield, you
draw three cards, gain 6 life, and create three 2/1 black Bat creature tokens with flying.

At the beginning of your end step, you discard a card, lose 2 life, and sacrifice a creature.

When Greed's Gambit leaves the battlefield, you discard three cards, lose 6 life, and sacrifice three creatures.