Cheapest priced copy (Foundations Commander): $0.35 at Card Kingdom, near mint, their price list as of .
Consuming Corruption 
Instant · Uncommon · Foundations Commander · #93
Consuming Corruption deals X damage to target creature or planeswalker and you gain X life, where X is the number of Swamps you control.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations Commander | 93 | Uncommon | $0.35 | — |
| Modern Horizons 3 | 84 | Uncommon | $0.35 | $0.49 |
| Modern Horizons 3 | 407 | Uncommon | $0.79 | $0.49 |
2 rulings from Wizards of the Coast
- 7 June 2024The value of X is calculated only once, as Consuming Corruption resolves.
- 7 June 2024If the target creature or planeswalker is an illegal target as Consuming Corruption tries to resolve, it won't resolve and none of its effects will happen. You won't gain life.