Melmidoc, King of Curses

Saving Throw — Whenever Melmidoc enters the battlefield or attacks, roll a d20.
Whenever you roll a d20, choose one —
• If the result is 10 or less, each player loses 2 life
and discards a card.
• If the result is 11-19, Draw a card for each
opponent with 2 or less cards in hand.
• If the result is 20, each opponent chooses up to
two creatures, then sacrifices the rest.