Professor's Warning
- standard: Not Legal
- pioneer: Legal
- modern: Legal
- legacy: Legal
- vintage: Legal
- commander: Legal
- pauper: Legal
Market Price
$0.28-9.7%
Last updated Oct 22, 2026
Card Text & Details
Instant
Mana cost {B}
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.)
Illustrated by Kieran Yanner
About this card
Professor's Warning is an Instant from Strixhaven: School of Mages, a 2021 Magic: The Gathering set. It appears at collector number 84 of 383, carries a rarity of Common, and comes in non-foil and foil printings. It is legal in Pioneer, Modern, Legacy, Vintage, Commander, and Pauper. The artwork is by Kieran Yanner.
Available Listings
| Condition | Finish | Lang | Seller | Qty | Price | Action |
|---|---|---|---|---|---|---|
| NM — Near Mint | Non-Foil | en | Slab & Sleeve | 0 | $0.29 | |
| NM — Near Mint | Non-Foil | en | TokyoTCG | 5 | $0.29 | |
| MP — Moderately Played | Non-Foil | en | TokyoTCG | 5 | $0.25 | |
| MP — Moderately Played | Non-Foil | en | Slab & Sleeve | 2 | $0.25 |