Cheapest priced copy (Tenth Edition): $0.35 at Card Kingdom, near mint, their price list as of .
Academy Researchers 
Creature — Human Wizard · 2/2 · Uncommon · Tenth Edition · #63
When this creature enters, you may put an Aura card from your hand onto the battlefield attached to this creature.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.35 to $3.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Tenth Edition | 63 | Uncommon | $0.35 | $3.99 |
| Urza's Saga | 58 | Uncommon | $0.35 | — |
One ruling from Wizards of the Coast
- 15 July 2007You can't put an Aura card from your hand onto the battlefield this way if that Aura can't legally enchant Academy Researchers. For example, you can't put an Aura with "enchant land" or "enchant green creature" onto the battlefield attached to Academy Researchers (unless Academy Researchers somehow turned into a land or a green creature before the ability resolved).