Thief of Sanity
Flying Whenever Thief of Sanity deals combat damage to a player, look at the top three cards of that player's library, exile one of them face down, then put the rest into their graveyard. You may cast that card for as long as it remains exiled, and mana of any type can be spent to cast it.
Creature — Specter
standard:
not legal
future:
not legal
historic:
legal
gladiator:
legal
pioneer:
legal
explorer:
legal
modern:
legal
legacy:
legal
pauper:
not legal
vintage:
legal
penny:
legal
commander:
legal
oathbreaker:
legal
brawl:
not legal
historicbrawl:
legal
alchemy:
not legal
paupercommander:
not legal
duel:
legal
oldschool:
not legal
premodern:
not legal
predh:
not legal
High - Low