Sphinx Pact

At the beginning of your upkeep, choose one that hasn't been chosen. Each mode must target a different player.
- Target players life total becomes 10.
- Target player discards his or her hand.
- Target player sacrifices half the creatures he or she controls, rounded up.
- Target player reveals cards from the top of their library until two land cards are revealed. That player puts all cards revealed this way into their graveyard.