Vio, Dream Drifter

Flying, vigilance
Whenever Vio attacks or blocks, exile the bottom
card of your library. Then, if four or more
nonland cards with the same mana cost are exiled
with Vio, exile Vio and note that mana cost.
When you do, you may play any number of cards
exiled with Vio with the noted mana cost without
paying their mana costs.
Crew 1