Cheapest priced copy (Foundations Jumpstart): $0.35 at Card Kingdom, near mint, their price list as of .
Armored Kincaller 
Creature — Dinosaur · 3/3 · Common · The Lost Caverns of Ixalan · #174
When this creature enters, you may reveal a Dinosaur card from your hand. If you do or if you control another Dinosaur, you gain 3 life.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations Jumpstart | 630 | Common | $0.35 | — |
| The Lost Caverns of Ixalan | 174 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 10 November 2023Whether or not you control another Dinosaur is checked only as Armored Kincaller's ability is resolving. It doesn't matter if you still control Armored Kincaller at the time, or if it's still a Dinosaur.