"Misery. Inadequacy. Failure. The common denominator is you."

Divide by Zero

Return target spell or permanent with mana value 1 or greater to its owner's hand.
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.)

The List

Strixhaven: School of Mages

If a card is brought into the game from outside the game, it will stay in the game until it ends or until its owner leaves the game, whichever comes first.

If an effect returns a copy of a spell to its owner’s hand, the copy ceases to exist.

If instructed to learn, you may do nothing. Discarding a card and putting a Lesson card into your hand are both optional.

If you bring a card into the game from outside the game in a Constructed tournament (or a Constructed game played under tournament conditions), you may select only a card from your sideboard. In casual Constructed games, the card comes from your collection.

If you bring a card into the game from outside the game in a Sealed Deck or Booster Draft event, you may select only a card that is in the card pool that you built your deck from.