Cheapest priced copy (Rivals of Ixalan): $0.49 at Card Kingdom, near mint, their price list as of .
Knight of the Stampede 
Creature — Human Knight · 2/4 · Common · Rivals of Ixalan · #138
Dinosaur spells you cast cost {2} less to cast.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.49 to $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Rivals of Ixalan | 138 | Common | $0.49 | $4.49 |
One ruling from Wizards of the Coast
- 19 January 2018If an effect refers to a “[subtype] spell” or “[subtype] card,” it refers only to a spell or card that has that subtype. For example, March of the Drowned is a card that benefits Pirates and features Pirates in its illustration, but it isn’t a Pirate card.