Magic: The Gathering

Professor Onyx

Strixhaven: School of Mages Promos 83p • mythic

Set: Strixhaven: School of Mages Promos
Collector number: 83p
Rarity: Mythic
Mana cost: 4 generic mana black mana black mana
Type: Planeswalker
Colors: Black
Artist: Kieran Yanner
Market price: $5.59

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$5.59est. via TCGplayer

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0copies owned

4other printings of this card

Market

What it's worth

$5.59market price via TCGplayer · Aug 19, 2026$5.10 – $5.59 over the tracked period

Estimate for a typical copy of Professor Onyx; condition, printing, and grading move the real number.

Lore

Why it matters

As a planeswalker card of mythic rarity, Professor Onyx represents a pinnacle of power within your collection. The striking illustration by Kieran Yanner distinguishes this specific promo version, making it a sought-after centerpiece for those who appreciate both tactical gameplay and unique artistry.

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Card face

What it does

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.

Formats

Where you can play it

StandardNot legal
PioneerLegal
ModernLegal
LegacyLegal
VintageLegal
CommanderLegal
PauperNot legal
BrawlLegal
HistoricLegal
TimelessLegal
Penny DreadfulNot legal
OathbreakerLegal

Portions of the materials used are property of Wizards of the Coast. ©Wizards of the Coast LLC. Card text via Scryfall. Not approved or endorsed by Wizards. As of the last catalogue refresh.

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Where to find one

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Provenance

Where it came from

Professor Onyx, a card representing the planeswalker Liliana Vess, was released in 2021 as part of the Strixhaven: School of Mages set. This specific version, numbered 83p, is a promotional variant that features unique borderless art created by Kieran Yanner. The design reflects the character's narrative role as a necromancy professor at the Strixhaven university, utilizing a gothic and academic aesthetic to differentiate this persona from her previous depictions in the game.

Kieran Yanner was commissioned to illustrate the piece, focusing on a balance between the character's familiar dark magic and her new institutional setting. The card was received positively by the community for its evocative portraiture and for providing a visual bridge between the character's long-standing history as a rogue planeswalker and her temporary life as an educator. It remains a notable piece for collectors focusing on high-rarity planeswalker cards.

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Other printings

Every version of this card

The same card, printed again — different sets, treatments, and prices.

Collectors

Who's collecting this

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About

About Professor Onyx

Professor Onyx is a card in the Magic: The Gathering catalog on collecto.rs. Strixhaven: School of Mages Promos 83p • mythic. Catalog data is sourced from Scryfall. No public cards collectors track this one yet — adding yours would make you the first on collecto.rs.

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Can I track my own copy of Professor Onyx?

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Where does the Professor Onyx catalog entry come from?

The catalog entry for Professor Onyx is sourced from Scryfall. Catalog-level facts stay consistent across every collector; your own data (condition, edition, acquisition notes) is yours.