Magic: The Gathering · expansion
Professor's Warning
Strixhaven: School of Mages · #84 · common · 2021
Instant
Listings
No active listings
From
—
Market reference
$0.30
TCGPlayer
Current listings on The Game Traders
No active listings for this card right now.
Card facts
Quick reference for collectors and graders.
- Collector number
- 84 / 393
- Release year
- 2021
- Rarity
- common
- Illustrator
- Kieran Yanner
- Colors
- B
- Frame
- 2015
- Border
- black
- Finishes
- nonfoil · foil
- Printed
- 2021-04-23
About this card
Mana cost: {B}
Type: Instant
Choose one — • Put a +1/+1 counter on target creature. • Target creature gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)
"Professor Onyx urged the twins to prepare for the dark mage Extus, sounding very much like someone familiar with the rise of tyrants."
Tournament legality
Current legal status across competitive formats.
Pricing reference
Latest snapshot from the upstream catalog. Actual marketplace prices fluctuate by condition, edition, and grade — use this as a reference, not a quote.
Scryfall pricing
| Variant | Price |
|---|---|
| USD (non-foil) | $0.30 |
| USD (foil) | $0.32 |
| EUR (non-foil) | €0.08 |
| EUR (foil) | €0.11 |
| MTGO tix | 0.03 |
Frequently asked
How can I tell if my Professor's Warning is real?
Professor's Warning is not on our list of commonly-counterfeited cards, but counterfeits exist across every set. Check the print quality and cardstock (real cards have a distinctive blue inner core visible from the edge), the rosette pattern on the back, the security stamp on planeswalker / mythic cards from recent sets, and confirm the collector number and set code match the official Scryfall record. For high-value copies we recommend submitting to a professional grader (PSA, BGS, CGC) for tamper-evident authentication.
What is Professor's Warning worth?
As of the latest data, the current market reference price for Professor's Warning is $0.30; there are no active listings on The Game Traders right now. Actual value depends on condition, grading, edition and printing variant — graded high-condition copies (PSA 9–10) trade at a substantial premium over raw copies.
What set is Professor's Warning from?
Professor's Warning is from the Magic: The Gathering set "Strixhaven: School of Mages" in the expansion series, released in 2021.
What rarity is Professor's Warning?
Professor's Warning is a common card in the Strixhaven: School of Mages set.
