
Target creature gets -4/-0 until end of turn.
Learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)
Arcane Subtraction has 1 printing, first in Strixhaven: School of Mages (2021). EDHREC ranks it #25,697 among Commander cards. It has 4 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.