Ixalan

Fleet Swallower | Creature | Fish | Whenever Fleet Swallower attacks, target player mills half their library, rounded up. | Tomasz Jedruszek

Tishana, Voice of Thunder | Legendary Creature | Merfolk Shaman | Tishana, Voice of Thunder's power and toughness are each equal to the number of cards in your hand. You have no maximum hand size. When Tishana enters the battlefield, draw a card for each creature you control. | Anna Steinbauer