Professor's Warning 
Instant
Appears in 897 of 18,635 decks (4.8%).
Appears with these commanders:
| Commander | Decks | Synergy ↓ |
|---|---|---|
| Mahadi, Emporium Master | 3 | -0.01 |
| Miara, Thorn of the Glade + Numa, Joraga Chieftain | 3 | -0.01 |
| Obelisk Spider | 2 | -0.01 |
| Ramirez DePietro, Pillager | 2 | -0.01 |
| Cleric of Life's Bond | 1 | -0.01 |
| Devourer of Memory | 1 | -0.01 |
| Passageway Seer | 1 | -0.01 |
| Voidwing Hybrid | 1 | -0.01 |
| Old Man Willow | 1 | -0.01 |
| Akawalli, the Seething Tower | 3 | -0.02 |
| Barrowin of Clan Undurr | 2 | -0.02 |
| Armix, Filigree Thrasher + Ich-Tekik, Salvage Splicer | 2 | -0.02 |
| Rona, Sheoldred's Faithful | 2 | -0.02 |
| Totentanz, Swarm Piper | 2 | -0.02 |
| Death-Priest of Myrkul | 1 | -0.02 |
| Vampire Socialite | 1 | -0.02 |
| Armix, Filigree Thrasher + Rebbec, Architect of Ascension | 1 | -0.02 |
| Underworld Coinsmith | 1 | -0.02 |
| Sprouting Thrinax | 1 | -0.02 |
| Dina, Soul Steeper | 8 | -0.03 |
| Mayhem Devil | 5 | -0.03 |
| Abomination of Llanowar | 5 | -0.03 |
| Syr Konrad, the Grim | 5 | -0.03 |
| Silver-Fur Master | 3 | -0.03 |
| Indulging Patrician | 2 | -0.03 |
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