Cheapest priced copy (Marvel Super Heroes): $0.35 at Card Kingdom, near mint, their price list as of .
Moonstone, Harsh Mistress 
Legendary Creature — Human Doctor Villain · 2/4 · Uncommon · Marvel Super Heroes · #107
Flying
Whenever you discard a card, you may exile that card from your graveyard. If you do, until the end of your next turn, you may play that card.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
2 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Marvel Super Heroes | 107 | Uncommon | $0.35 | $0.49 |
| Marvel Super Heroes | 447 | Uncommon | — | $0.79 |