Cheapest priced copy (Throne of Eldraine): $1.29 at Card Kingdom, near mint, their price list as of .
Feasting Troll King 
Creature — Troll Noble · 7/6 · Rare · Throne of Eldraine · #152
Vigilance, trample
When this creature enters, if you cast it from your hand, create three Food tokens. (They're artifacts with "{2}, {T}, Sacrifice this token: You gain 3 life.")
Sacrifice three Foods: Return this card from your graveyard to the battlefield. Activate only during your turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.99 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Throne of Eldraine | 152 | Rare | $1.29 | $0.99 |
| Throne of Eldraine | 368 | Rare | $2.49 | $2.99 |
| Throne of Eldraine Promos | 152p | Rare | $1.29 | $1.49 |
| Throne of Eldraine Promos | 152s | Rare | — | $1.29 |
6 rulings from Wizards of the Coast
- 4 October 2019If you put Feasting Troll King onto the battlefield from your hand without casting it, its enters-the-battlefield ability won't trigger.
- 4 October 2019If you cast a creature spell that enters the battlefield as a copy of Feasting Troll King, such as Clone, the enters-the-battlefield ability will trigger.
- 8 November 2024If an effect refers to a Food, it means any Food artifact, not just a Food artifact token. For example, you can sacrifice Tough Cookie (an Artifact Creature — Food Golem) to activate Maraleaf Rider's ability (an ability with "Sacrifice a Food" in its cost).
- 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.