The Professor Onyx foil mythic rare promo card from Magic: The Gathering's 2021 Strixhaven School of Mages collection, identified by card number 83p.
2021 • Magic: The Gathering • Strixhaven: School of Mages Promos
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$6.32
The Professor Onyx foil mythic rare promo card from Magic: The Gathering's 2021 Strixhaven School of Mages collection is identified by card number 83p. This release features the legendary Planeswalker Liliana, a central figure in the game's history. The card presents her with a mana cost of four generic mana and two black mana, resulting in a mana value of six. As a black-colored card, it adheres to the game's color pie constraints while offering powerful life manipulation capabilities. The card's design emphasizes the subject's formidable presence, typical of the set's high-rarity treatments. Collectors often seek out this foil version for its visual appeal and its place within the Strixhaven promotional ecosystem. The artwork, created by Kieran Yanner, brings the character to life, though the focus remains on the card's identity as a key promotional item from the PSTX set code. In terms of gameplay mechanics, the card possesses the Magecraft ability. This mechanic triggers whenever a player casts or copies an instant or sorcery spell, causing each opponent to lose 2 life while the controller gains 2 life. This creates a dynamic of resource denial and life gain that defines the card's strategic role. The card begins with 5 loyalty, allowing the player to utilize its activated abilities. One ability allows the player to lose 1 life to look at the top three cards of their library, putting one into their hand and the rest into their graveyard. Another ability forces each opponent to sacrifice a creature with the greatest power among those they control. The ultimate ability involves a complex interaction where opponents may discard a card; if they do not, they lose 3 life, a process that repeats multiple times. These mechanics make it a versatile tool for control-oriented strategies. It serves as a valuable addition for those building themed collections or seeking high-rarity promotional cards. The combination of the mythic rare status, the foil finish, and the iconic character design makes it a standout piece for any Magic: The Gathering enthusiast.
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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.
