Professor's Warning
Strixhaven: School of Mages · #84

Professor's Warning

Professor's Warning is a Common Instant from Strixhaven: School of Mages (84) in Magic: The Gathering. Mana cost {B}. Color identity: B. Cactaur's latest catalog snapshot shows a market reference near $0.31 for ungraded copies.

Strixhaven: School of Mages set collectorsBulk and playset buyers [object Object][object Object][object Object][object Object][object Object][object Object]
TCGPlayer market $0.31
Cardmarket trend €0.12
Rarity Common
App coming soon

Who is this card for?

Professor's Warning suits collectors and players working on Strixhaven: School of Mages who need the Common slot. This is typically a low-cost slot for master sets; avoid overpaying unless you need a specific finish or near-mint condition.

What is Professor's Warning from Strixhaven: School of Mages?

Professor's Warning is a Instant in Strixhaven: School of Mages numbered 84. Mana cost {B}. Color identity: B. Professor's Warning (84) from Strixhaven: School of Mages should be evaluated with set context, mana cost, color identity, and condition together. This printing is from Strixhaven: School of Mages.

What is Professor's Warning worth today?

Cactaur tracks a market reference near $0.31 for Professor's Warning. Low and high spread runs $0.31 to null. Per-finish references: cardmarket: $0.12; foil: $0.31; Normal: $0.32. This printing is from Strixhaven: School of Mages. Collector number 84 distinguishes this printing from same-name cards in other sets.

SetStrixhaven: School of Mages
Number84
RarityCommon
TCGPlayer USD$0.31
Cardmarket EUR€0.12
cardmarket $0.12
foil $0.31
Normal $0.32

Card stats

ColorsB

How collectible is Professor's Warning?

Professor's Warning is a Common printing in Strixhaven: School of Mages. Master set builders use collector number and set symbol to track completion progress. This printing is from Strixhaven: School of Mages. Collector number 84 distinguishes this printing from same-name cards in other sets.

What are the key details for Professor's Warning?

Professor's Warning lists as Instant. Artist: Kieran Yanner. Rules text is indexed in the catalog for search and deck research. This printing is from Strixhaven: School of Mages. Collector number 84 distinguishes this printing from same-name cards in other sets. Catalogued rarity: Common.

Cactaur's take

Professor's Warning (84) from Strixhaven: School of Mages should be evaluated with set context, mana cost, color identity, and condition together.

Pros

  • Professor's Warning is catalogued as Common Instant in Strixhaven: School of Mages, making set and collector number verification straightforward.
  • Public market data shows a reference near $0.31 across finishes (cardmarket: $0.12; foil: $0.31; Normal: $0.32).
  • Mana cost {B} and type line Instant help deck builders confirm the correct printing quickly.

Cons

  • Raw market prices vary by condition and finish — near-mint estimates are not slab grades.

Verdict: Treat this as a low-stakes master-set slot unless you are paying for gem condition or a specific finish.

FAQ

What is Professor's Warning from Strixhaven: School of Mages?

Professor's Warning is a Common Instant from Strixhaven: School of Mages numbered 84 in Magic: The Gathering. Cactaur indexes set, rarity, mana cost, and market references for this printing.

How much is Professor's Warning worth?

Cactaur's catalog snapshot shows a market reference near $0.31 for ungraded Professor's Warning. Condition, finish, and recent sold comps can move realized prices above or below that benchmark.

What rarity is Professor's Warning?

Professor's Warning is catalogued as Common in Strixhaven: School of Mages. Use the collector number and set symbol on listings to confirm you are buying this exact printing.

Is Professor's Warning legal in Commander or Standard?

Professor's Warning shows format legality in historic, timeless, gladiator, pioneer based on our latest ingest. Always verify the exact printing and ban-list updates before registering a deck for an event.

Should I buy Professor's Warning near mint or played?

Near-mint copies command the catalog reference near $0.31. Heavily played copies trade lower unless the card is a chase rare where any clean copy is scarce.

Related cards

Trust & data sources. Cactaur displays catalog and market data from pokemontcg.io embedded TCGPlayer/Cardmarket references. Prices change frequently and are not guarantees.

Cactaur does not authenticate cards or guarantee values. Scan your copy in the iPhone app for condition-aware guidance.

Catalog snapshot: 2026-06-23. Last updated: 2026-06-23.