Etz HaDa'at, Forbidden Fruit

Regenerate: {b}.
Whenever you draw a card, you may pay {1}{b}{u}. If you do, each opponent discards a card
and loses 1 life.
At the beginning of your upkeep, you may pay {2}{b}{u}. If you do, draw two cards, then put a
card from your hand on top of your library