Professor's Warning 
Instant
Appears in 1,402 of 29,583 decks (4.7%).
Appears with these commanders:
| Commander | Decks ↓ | Synergy |
|---|---|---|
| Shirei, Shizo's Caretaker | 298 | 0.4 |
| Tor Wauki the Younger | 139 | 0.25 |
| Wilson, Refined Grizzly + Agent of the Shadow Thieves | 95 | 0.38 |
| Kulrath Knight | 67 | 0.5 |
| Black Waltz No. 3 | 40 | 0.14 |
| Witherbloom Apprentice | 32 | 0.06 |
| Mauhúr, Uruk-hai Captain | 27 | 0.72 |
| Corpsejack Menace | 25 | 0.18 |
| Tormented Hero | 18 | 0.57 |
| Winding Constrictor | 18 | 0.16 |
| Crypt Rats | 18 | 0.11 |
| Dalek Squadron | 14 | 0.38 |
| Taborax, Hope's Demise | 14 | 0.19 |
| Killian, Ink Duelist | 14 | -0.01 |
| Dina, Soul Steeper | 14 | -0.03 |
| Oona's Blackguard | 13 | 0.45 |
| Mr. Orfeo, the Boulder | 13 | 0.0 |
| Ashiok's Adept | 12 | 0.38 |
| Falthis, Shadowcat Familiar + Kediss, Emberclaw Familiar | 12 | 0.36 |
| Unforgiving One | 12 | 0.33 |
| Murderous Redcap | 11 | 0.06 |
| Yargle, Glutton of Urborg | 10 | 0.13 |
| Ancient Lumberknot | 10 | 0.08 |
| Kalain, Reclusive Painter | 10 | 0.06 |
| Stormclaw Rager | 10 | 0.04 |
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