Crosis, Slave to Xathrid

Deathtouch, Fear, Hexproof, Lifelink
{t}: Pay {x} life,each opponent reveals his/her hand. You choose {x} nonland cards from each hand then exile those cards
Whenever an opponent casts a spell or this card deals combat damage to them that player discards a card from his/her hand If he/she cannot then he/she loses life equal to the spell's converted mana cost