Cheapest priced copy (Born of the Gods): $0.35 at Card Kingdom, near mint, their price list as of .
Ephara's Enlightenment 
Enchantment — Aura · Uncommon · Born of the Gods · #146
Enchant creature
When this Aura enters, put a +1/+1 counter on enchanted creature.
Enchanted creature has flying.
Whenever a creature you control enters, you may return this Aura to its owner's hand.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Born of the Gods | 146 | Uncommon | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 1 February 2014The last ability of Ephara's Enlightenment will trigger only if it's on the battlefield when the creature enters the battlefield under your control. You may return it to its owner's hand only if it's still on the battlefield when that ability resolves.
- 1 February 2014If Ephara's Enlightenment isn't on the battlefield when its enters-the-battlefield ability resolves, put a +1/+1 counter on the creature it was enchanting when it left the battlefield.