Cheapest priced copy (Foundations Jumpstart): $0.35 at Card Kingdom, near mint, their price list as of .
Thundering Spineback 
Creature — Dinosaur · 5/5 · Uncommon · Jumpstart · #437
Other Dinosaurs you control get +1/+1.
{5}{G}: Create a 3/3 green Dinosaur creature token with trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
6 printings · $0.35 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Game Night 2019 | 53 | Uncommon | $0.39 | — |
| Foundations Jumpstart | 726 | Uncommon | $0.35 | — |
| Jumpstart | 437 | Uncommon | $0.35 | — |
| The Lost Caverns of Ixalan Commander | 260 | Uncommon | $0.39 | — |
| The List | XLN-210 | Uncommon | $0.35 | — |
| Ixalan | 210 | Uncommon | $0.35 | $1.99 |