Cheapest priced copy (Modern Horizons 3 Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Gluttonous Hellkite 
Creature — Dragon · 3/3 · Rare · Modern Horizons 3 Commander · #73
When you cast this spell, each player sacrifices X creatures. This creature enters with two +1/+1 counters on it for each creature sacrificed this way.
Flying, trample
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.49 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons 3 Commander | 73 | Rare | $0.99 | $0.49 |
| Modern Horizons 3 Commander | 125 | Rare | $0.49 | — |
2 rulings from Wizards of the Coast
- 7 June 2024Use the number of creatures that were actually sacrificed this way, not the value of X, to determine the number of +1/+1 counters with which Gluttonous Hellkite should enter the battlefield.
- 7 June 2024Gluttonous Hellkite's triggered ability will resolve before Gluttonous Hellkite does. If Gluttonous Hellkite is countered or otherwise leaves the stack in response to that triggered ability, the triggered ability will still resolve as normal.