Professor Onyx is a Legendary Planeswalker — Liliana card from the Strixhaven: School of Mages Promos set. It has a mana cost of {4}{B}{B}, a mana value of 6, and is colored B. The card features a loyalty of 5 and a normal layout. This printing is a Foil promo with card number 83p and is illustrated by Kieran Yanner.
2021 • Magic: The Gathering • Strixhaven: School of Mages Promos
No listings available right now.
| Condition | Value | Source | Trend | Price Details |
|---|---|---|---|---|
$6.30As of 9/25/2026 | Guide Estimate | 0% | ||
Raw / Ungraded
TCGplayer Market (reference) · Guide Estimate evidence · captured Sep 25, 2026
Professor Onyx is a Magic: The Gathering trading card game card. It is a Legendary Planeswalker — Liliana with a mana cost of {4}{B}{B} and a mana value of 6. The card is colored B with a color identity of B. It has a loyalty of 5 and a normal layout. The card is from the Strixhaven: School of Mages Promos set (code: PSTX) and is identified as card number 83p. It is a Mythic Rare Foil promo card illustrated by Kieran Yanner.
We'll pre-fill the product details from this catalog entry, so your listing lands on this exact page. Just add photos of your copy, pick its condition, and set your price.
The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
The core identity of the card within the set.
The subject, team, league, and sport context tied to this card.
Featured
Professor Onyx
Game
Magic: The Gathering
Rarity, print treatment, and game-specific stats for this card.
Mythic Rare
Kieran Yanner
Card Stock
English
Foil
{4}{B}{B}
Legendary Planeswalker — Liliana
5
B
Abilities, attacks, oracle text, and flavor text printed on the card.
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.
Notable collectible traits associated with this card profile.
Explore cards with this name across sets and editions. Check each card’s details before choosing a version.
Tap an image to preview it, or a card’s name to open its page.
