Cheapest priced copy (Aetherdrift Commander): $0.59 at Card Kingdom, near mint, their price list as of .
Corpse Knight 
Creature — Zombie Knight · 2/2 · Uncommon · March of the Machine Commander · #321
Whenever another creature you control enters, each opponent loses 1 life.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.59 to $3.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Aetherdrift Commander | 50 | Uncommon | $0.59 | — |
| Core Set 2020 | 206 | Uncommon | $0.79 | $3.49 |
| Core Set 2020 | 206† | Uncommon | $0.59 | — |
| March of the Machine Commander | 321 | Uncommon | $0.99 | — |
| Core Set 2020 Promos | 206 | Uncommon | $1.99 | $3.49 |
One ruling from Wizards of the Coast
- 12 July 2019In a Two-Headed Giant game, Corpse Knight's ability causes the opposing team to lose 1 life twice.