Cheapest priced copy (Journey into Nyx): $0.49 at Card Kingdom, near mint, their price list as of .
Spawn of Thraxes 
Creature — Dragon · 5/5 · Rare · Journey into Nyx · #112
Flying
When this creature enters, it deals damage to any target equal to the number of Mountains you control.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.49 to $1.29 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Journey into Nyx | 112 | Rare | $0.49 | $0.79 |
| Journey into Nyx Promos | 112★ | Rare | — | $1.29 |
One ruling from Wizards of the Coast
- 26 April 2014Count the number of Mountains you control when the last ability resolves to determine how much damage is dealt. This includes any land with the subtype Mountain, not just those named Mountain.