Cheapest priced copy (Dragon's Maze): $0.49 at Card Kingdom, near mint, their price list as of .
Obzedat's Aid 
Sorcery · Rare · Dragon's Maze · #89
Return target permanent card from your graveyard to the battlefield.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.49 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dragon's Maze | 89 | Rare | $0.49 | $1.99 |
2 rulings from Wizards of the Coast
- 15 April 2013If the target is an Aura card, you choose what it will enchant as Obzedat’s Aid resolves. If there’s nothing legal for it to enchant, it stays in the graveyard.
- 15 April 2013A permanent card is an artifact card, a creature card, an enchantment card, a land card, or a planeswalker card.