Professor's Warning 
Instant
Appears in 1,349 of 28,395 decks (4.8%).
Appears with these commanders:
| Commander | Decks ↓ | Synergy |
|---|---|---|
| Death-Priest of Myrkul | 3 | -0.02 |
| Sphinx of the Guildpact | 3 | -0.03 |
| Queza, Augur of Agonies | 3 | -0.04 |
| Silver-Fur Master | 3 | -0.04 |
| Juri, Master of the Revue | 3 | -0.04 |
| Rilsa Rael, Kingpin | 3 | -0.04 |
| Garna, Bloodfist of Keld | 3 | -0.04 |
| Armament Dragon | 2 | None |
| The Wretched | 2 | 0.95 |
| Will-o'-the-Wisp | 2 | 0.95 |
| Vampire of the Dire Moon | 2 | 0.95 |
| Nadier, Agent of the Duskenel + Tormod, the Desecrator | 2 | 0.62 |
| Nested Ghoul | 2 | 0.45 |
| Hailstorm Valkyrie | 2 | 0.35 |
| Sarevok, Deathbringer + Feywild Visitor | 2 | 0.29 |
| Bloodsworn Squire // Bloodsworn Knight | 2 | 0.24 |
| Xathrid Slyblade | 2 | 0.24 |
| Corrosive Mentor | 2 | 0.24 |
| Falthis, Shadowcat Familiar + Keleth, Sunmane Familiar | 2 | 0.15 |
| Soulblade Renewer + Soulblade Corrupter | 2 | 0.15 |
| Infesting Radroach | 2 | 0.15 |
| Sarevok, Deathbringer + Agent of the Shadow Thieves | 2 | 0.13 |
| Amber Gristle O'Maul + Agent of the Shadow Thieves | 2 | 0.09 |
| Exdeath, Void Warlock // Neo Exdeath, Dimension's End | 2 | 0.06 |
| Sarevok, Deathbringer + Far Traveler | 2 | 0.03 |
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