Professor's Warning 
Instant
Appears in 913 of 19,215 decks (4.8%).
Appears with these commanders:
| Commander | Decks | Synergy ↓ |
|---|---|---|
| Will-o'-the-Wisp | 2 | 0.95 |
| Restless Apparition | 1 | 0.95 |
| The Wretched | 1 | 0.95 |
| Sly Spy | 1 | 0.95 |
| Jumbo Imp | 1 | 0.95 |
| Muck Drubb | 1 | 0.95 |
| Etherium Pteramander | 1 | 0.95 |
| Reaper of Sheoldred | 1 | 0.95 |
| Yawgmoth Demon | 1 | 0.95 |
| Demonic Taskmaster | 1 | 0.95 |
| Vampire of the Dire Moon | 1 | 0.95 |
| Mauhúr, Uruk-hai Captain | 20 | 0.79 |
| Flesh-Eater Imp | 4 | 0.75 |
| Tenured Inkcaster | 3 | 0.7 |
| Skyclave Shadowcat | 3 | 0.7 |
| Hailstorm Valkyrie | 2 | 0.62 |
| Nadier, Agent of the Duskenel + Tormod, the Desecrator | 2 | 0.62 |
| Bloatfly Swarm | 2 | 0.62 |
| Conductor of Cacophony | 8 | 0.57 |
| Tormented Hero | 12 | 0.52 |
| Kulrath Knight | 43 | 0.49 |
| Oona's Blackguard | 10 | 0.48 |
| Nested Ghoul | 1 | 0.45 |
| Falthis, Shadowcat Familiar + Armix, Filigree Thrasher | 1 | 0.45 |
| Battlefield Butcher | 1 | 0.45 |
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