Cheapest priced copy (Modern Horizons 2): $0.49 at Card Kingdom, near mint, their price list as of .
Feast of Sanity 
Enchantment · Uncommon · Modern Horizons 2 · #84
Whenever you discard a card, this enchantment deals 1 damage to any target and you gain 1 life.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.49 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons 2 | 84 | Uncommon | $0.49 | $0.99 |