Slithermuse [Morningtide]

Set: Morningtide Type: Creature — Elemental Rare Cost: {2}{U}{U} When Slithermuse leaves the battlefield, choose an opponent. If that player has more cards in hand than you, draw cards equal to the difference. Evoke {3}{U} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)