Cheapest priced copy (Ixalan): $0.35 at Card Kingdom, near mint, their price list as of .
Dark Nourishment 
Instant · Uncommon · Ixalan · #97
Dark Nourishment deals 3 damage to any target. You gain 3 life.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ixalan | 97 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 29 September 2017If the target permanent or player is an illegal target by the time Dark Nourishment resolves, the entire spell doesn’t resolve. You won’t gain life.