Vampiric Ritual

At the beginning of your precombat main phase,
you may search your library for a card and put it
on top of your library. If you do, discard 3 cards
from your hand. If you don't discard 3 cards,
everyone shuffles their graveyard, cards in exile,
permanents on the battlefield, and your hand
into their owner's library. All players go to 40 life.
All players have 9 poison counters and take 1
damage every time they draw a card. Exile
Vampiric Ritual and a card from your hand
at random.