Market Price£0.0930d —
Professor's Warning
common
Market Price£0.0930d —Price data for this card starts 14 Sept 2026
| Date | Market | Cardmarket | Cardmarket Foil |
|---|---|---|---|
| 14 Sept 2026 | N/A | £0.09 | £0.26 |
| 15 Sept 2026 | N/A | £0.09 | £0.26 |
| 16 Sept 2026 | N/A | £0.09 | £0.26 |
| 17 Sept 2026 | N/A | £0.09 | £0.26 |
| 18 Sept 2026 | £0.08 | £0.08 | £0.26 |
| 19 Sept 2026 | N/A | £0.07 | £0.21 |
| 20 Sept 2026 | N/A | £0.07 | £0.21 |
| 21 Sept 2026 | £0.06 | £0.06 | £0.21 |
| 22 Sept 2026 | £0.05 | £0.05 | £0.22 |
| 23 Sept 2026 | £0.05 | £0.05 | £0.22 |
| 24 Sept 2026 | £0.10 | £0.10 | £0.23 |
| 25 Sept 2026 | £0.10 | £0.10 | £0.23 |
| 26 Sept 2026 | £0.09 | £0.09 | £0.21 |
| 27 Sept 2026 | £0.09 | £0.09 | £0.18 |
Card Details
Instant
- Mana cost
- Mana value
- 1
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.
More Info
Common instant from Magic: The Gathering's Strixhaven (2021). Choose to give a creature +1/+1 or indestructible until end of turn.
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Card updated 27 Sept 2026. Prices may differ from individual listings.