Cheapest priced copy (Jumpstart 2022): $5.49 at Card Kingdom, near mint, their price list as of .
Monkey Cage 
Artifact · Rare · Mercadian Masques · #307
When a creature enters, sacrifice this artifact and create X 2/2 green Monkey creature tokens, where X is that creature's mana value.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $5.49 to $29.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart 2022 | 787 | Rare | $5.49 | — |
| Mercadian Masques | 307 | Rare | $5.99 | $29.99 |