Cheapest priced copy (Marvel Super Heroes): $0.49 at Card Kingdom, near mint, their price list as of .
Moon Girl and Devil Dinosaur 
Legendary Creature — Human Dinosaur Hero · 2/2 · Rare · Marvel Super Heroes · #421
Whenever you draw your second card each turn, until end of turn, Moon Girl and Devil Dinosaur's base power and toughness become 6/6 and they gain trample.
Whenever an artifact you control enters, draw a card. This ability triggers only once each turn.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
2 printings · $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Marvel Super Heroes | 223 | Rare | $0.49 | $0.49 |
| Marvel Super Heroes | 421 | Rare | $0.49 | $0.49 |