Professor's Warning 
Instant
Appears in 1,201 of 24,987 decks (4.8%).
Appears with these commanders:
| Commander | Decks ↓ | Synergy |
|---|---|---|
| Etherium Pteramander | 1 | 0.95 |
| Reaper of Sheoldred | 1 | 0.95 |
| Yawgmoth Demon | 1 | 0.95 |
| Safana, Calimport Cutthroat + Veteran Soldier | 1 | 0.95 |
| Battlefield Butcher | 1 | 0.45 |
| Black Knight | 1 | 0.45 |
| Blood Hustler | 1 | 0.45 |
| Demonic Taskmaster | 1 | 0.45 |
| Sarevok, Deathbringer + Feywild Visitor | 1 | 0.29 |
| Painsmith | 1 | 0.29 |
| Falthis, Shadowcat Familiar + Armix, Filigree Thrasher | 1 | 0.29 |
| Innocent Traveler // Malicious Invader | 1 | 0.29 |
| Crowd of Cinders | 1 | 0.29 |
| Balduvian Dead | 1 | 0.2 |
| Carrion Grub | 1 | 0.2 |
| Tormod, the Desecrator + Armix, Filigree Thrasher | 1 | 0.2 |
| Knight of Dusk's Shadow | 1 | 0.15 |
| Bloodthirsty Aerialist | 1 | 0.15 |
| Infesting Radroach | 1 | 0.15 |
| Esper Battlemage | 1 | 0.12 |
| Sarevok, Deathbringer + Agent of the Iron Throne | 1 | 0.12 |
| Erinis, Gloom Stalker + Agent of the Iron Throne | 1 | 0.12 |
| Catacomb Sifter | 1 | 0.12 |
| Gastal Thrillseeker | 1 | 0.12 |
| Judge Magister Gabranth | 1 | 0.12 |
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