Cheapest priced copy (Wilds of Eldraine): $0.99 at Card Kingdom, near mint, their price list as of .
Old Flitterfang 
Legendary Creature — Rat Faerie · 3/4 · Uncommon · Wilds of Eldraine · #316
Flying
At the beginning of each end step, if a creature died this turn, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.")
{2}{B}, Sacrifice another creature or artifact: Old Flitterfang gets +2/+2 until end of turn.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
1 printing · $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Wilds of Eldraine | 316 | Uncommon | $0.99 | $0.99 |
4 rulings from Wizards of the Coast
- 1 September 2023Old Flitterfang's triggered ability will check as the end step starts to see if a creature died this turn. If none did, the ability won't trigger at all.
- 8 November 2024You can't sacrifice a Food to pay multiple costs. For example, you can't sacrifice a Food token to activate its own ability and also to activate Maraleaf Rider's ability.
- 8 November 2024Whatever you do, don't eat the delicious cards.
- 8 November 2024Food is an artifact type. Even though it appears on some creatures, it's never a creature type.