Cheapest priced copy (Rise of the Eldrazi): $0.35 at Card Kingdom, near mint, their price list as of .
Aura Finesse 
Instant · Common · Rise of the Eldrazi · #54
Attach target Aura you control to target creature.
Draw a card.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Rise of the Eldrazi | 54 | Common | $0.35 | $2.99 |
5 rulings from Wizards of the Coast
- 15 June 2010As Aura Finesse resolves, if either target is illegal, the spell resolves but the Aura doesn’t move. You still draw a card. If both targets are illegal, Aura Finesse doesn’t resolve and you don’t draw a card.
- 15 June 2010You still control the Aura, even if you attach it to a creature you don’t control.
- 15 June 2010As Aura Finesse resolves, if the targeted Aura can’t legally enchant the targeted creature (for example, because the Aura is red and the creature has protection from red, or because the Aura has “enchant creature you control” and an opponent controls the creature), the spell resolves but the Aura doesn’t move. You still draw a card.
- 15 June 2010If you target an Aura that’s attached to a creature, you may also target the creature it’s attached to. Aura Finesse won’t cause the Aura to move, but you’ll still draw a card when it resolves.
- 15 June 2010You may target any Aura you control, and you may target any creature (including one you don’t control). Whether the Aura could legally enchant the creature is irrelevant as you’re choosing the targets.