![Professor Onyx [Strixhaven: School of Mages Prerelease Promos]](http://gtgames.ca/cdn/shop/files/5698176c-571d-4952-85d6-fbd1b15f2aaa.png?v=1775387510&width=800)
Professor Onyx [Strixhaven: School of Mages Prerelease Promos]
Professor Onyx [Strixhaven: School of Mages Prerelease Promos]
NOT LEGAL
Standard
NOT LEGAL
Future
LEGAL
Historic
LEGAL
Timeless
LEGAL
Gladiator
LEGAL
Pioneer
LEGAL
Modern
LEGAL
Legacy
NOT LEGAL
Pauper
LEGAL
Vintage
NOT LEGAL
Penny
LEGAL
Commander
LEGAL
Oathbreaker
NOT LEGAL
Standardbrawl
LEGAL
Brawl
NOT LEGAL
Alchemy
NOT LEGAL
Pauper Commander
LEGAL
Duel
NOT LEGAL
Oldschool
NOT LEGAL
Premodern
NOT LEGAL
Predh
Magecraft — Whenever you cast or copy an instant or sorcery spell, each opponent loses 2 life and you gain 2 life.
+1: You lose 1 life. Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.
−3: Each opponent sacrifices a creature with the greatest power among creatures that player controls.
−8: Each opponent may discard a card. If they don't, they lose 3 life. Repeat this process six more times.
+1: You lose 1 life. Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.
−3: Each opponent sacrifices a creature with the greatest power among creatures that player controls.
−8: Each opponent may discard a card. If they don't, they lose 3 life. Repeat this process six more times.
