Professor Onyx Cards
The complete Professor Onyx checklist: 8 cards — cards spanning 2021–2024.
Data updated June 29, 2026.
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mtg
2024
Frequently Asked Questions about Professor Onyx Cards
Does Professor Onyx have a rookie card?
No confirmed Professor Onyx rookie cards are currently in the AgentGrail catalog. The catalog covers 8 Professor Onyx cards in total. Check back as we continue to add new sets.
What years were Professor Onyx cards made?
The AgentGrail catalog includes Professor Onyx cards from 2021 through 2024, totaling 8 cards across all sets and brands. The earliest cards date from 2021 and the most recent are from 2024.
What sets include Professor Onyx cards?
Professor Onyx cards appear in numerous sets, including Duskmourn: House of Horror Commander, Strixhaven: School of Mages, Strixhaven School of Mages. The full checklist on this page lists every set in the AgentGrail catalog.
Where can I buy Professor Onyx cards?
eBay is the largest marketplace for Professor Onyx mtg cards, offering both raw and graded (PSA, BGS, SGC) copies. Use the "Find on eBay" buttons on this page to search current listings. For investment-grade copies, look for PSA 10 certified cards.
Answers are grounded in AgentGrail catalog data and recent eBay market comps.
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Compiled by the AgentGrail team · Data refreshed June 29, 2026