Strixhaven: School of Mages

Divide by Zero | Instant | | 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.) | Liiga Smilshkalne

Kelpie Guide | Creature | Beast | {T}: Untap another target permanent you control. {T}: Tap target permanent. Activate only if you control eight or more lands. | Ilse Gort

Mentor's Guidance | Sorcery | | When you cast this spell, copy it if you control a planeswalker, Cleric, Druid, Shaman, Warlock, or Wizard. Scry 1, then draw a card. | Brian Valeza

Solve the Equation | Sorcery | | Search your library for an instant or sorcery card, reveal it, put it into your hand, then shuffle. | Lie Setiawan

Rootha, Mercurial Artist | Legendary Creature | Orc Shaman | {2}, Return Rootha, Mercurial Artist to its owner's hand: Copy target instant or sorcery spell you control. You may choose new targets for the copy. | Chris Rahn

Golden Ratio | Sorcery | | Draw a card for each different power among creatures you control. | Alix Branwyn