Khayin the Apostate

Cascade
Khayin the Apostate's power is equal to half
the total number of cards in each players hand,
rounded up, and its toughness is equal to that
value plus 1.
During each players upkeep, that player shuffles
his or her library.
When Khayin the Apostate is destroyed, each
player discards his or her hand, then draws 7
cards.