Cheapest priced copy (Apocalypse): $0.69 at Card Kingdom, near mint, their price list as of .
Aether Mutation 
Sorcery · Uncommon · Apocalypse · #91
Return target creature to its owner's hand. Create X 1/1 green Saproling creature tokens, where X is that creature's mana value.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.69 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Apocalypse | 91 | Uncommon | $0.69 | $1.99 |
One ruling from Wizards of the Coast
- 4 October 2004You only put the tokens onto the battlefield if the target creature is still a legal target on resolution.