Kasmias, the Endless Maw

Partner with Sereza, the Consuming Tide
Islandwalk, Trample
When Kasmias, the Endless Maw enters the battlefield, draw cards equal to the number of
cards in exile.
Whenever Kasmias, the Endless Maw deals
combat damage to a player or planeswalker, that
player or planeswalker's controller discards a card
and sacrifices a creature.