Professor Onyx
6 Magic: The Gathering cards named Professor Onyx, newest first, with daily Cardmarket and TCGplayer prices.
6 Magic: The Gathering cards are named Professor Onyx, across 4 sets released from 2021 to 2024. The newest printing is from Duskmourn: House of Horror Commander, released . As of 17 Oct 2026, the most valuable is Professor Onyx 276 from Strixhaven: School of Mages (Foil) at $36.00 on TCGplayer and the same printing (Foil) at €16.80 on Cardmarket. The cheapest is Professor Onyx 83p from Strixhaven: School of Mages Promos (Normal) at $4.71 on TCGplayer and Professor Onyx 153 from Duskmourn: House of Horror Commander (Foil) at €1.00 on Cardmarket.
| Card | Set | Rarity | Released | TCGplayerUSD | CardmarketEUR |
|---|---|---|---|---|---|
Professor Onyx 153Duskmourn: House of Horror Commander · mythic · 27 Sep 2024 | Duskmourn: House of Horror Commander | mythic | $5.17Normal | €5.60Normal€1.00Foil | |
Professor Onyx 83pStrixhaven: School of Mages Promos · mythic · 23 Apr 2021 | Strixhaven: School of Mages Promos | mythic | $4.71Normal$6.45Foil | €4.21Normal€5.07Foil | |
Professor Onyx 83sStrixhaven: School of Mages Promos · mythic · 23 Apr 2021 | Strixhaven: School of Mages Promos | mythic | $17.74Foil | €16.47Foil | |
Professor Onyx 83Strixhaven: School of Mages · mythic · 23 Apr 2021 | Strixhaven: School of Mages | mythic | $6.73Normal$7.35Foil | €5.30Normal€8.10Foil | |
Professor Onyx 276Strixhaven: School of Mages · mythic · 23 Apr 2021 | Strixhaven: School of Mages | mythic | $11.11Normal$36.00Foil | €8.40Normal€16.80Foil | |
Professor Onyx 90088Magic Online Promos · mythic · 24 Jun 2002 | Magic Online Promos | mythic | — | — |
For each market, the first figure is the printing’s cheapest non-foil market price and the second its dearest foil one, each with its variant. Prices last updated 17 Oct 2026, refreshed daily at 03:00 UTC. Price information only; Dexicards does not sell cards.