Cheapest priced copy (Stronghold): $0.35 at Card Kingdom, near mint, their price list as of .
Lab Rats 
Sorcery · Common · Stronghold · #61
Buyback {4} (You may pay an additional {4} as you cast this spell. If you do, put this card into your hand as it resolves.)
Create a 1/1 black Rat creature token.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
1 printing · $0.35 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Stronghold | 61 | Common | $0.35 | — |