Cheapest priced copy (Planeshift): $0.49 at Card Kingdom, near mint, their price list as of .
Natural Emergence 
Enchantment · Rare · Planeshift · #117
When this enchantment enters, return a red or green enchantment you control to its owner's hand.
Lands you control are 2/2 creatures with first strike. They're still lands.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.49 to $7.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Planeshift | 117 | Rare | $0.49 | $7.99 |
2 rulings from Wizards of the Coast
- 4 October 2004You choose the enchantment to return on resolution of the triggered ability. This is not targeted.
- 1 October 2009A noncreature permanent that turns into a creature is subject to the “summoning sickness” rule: It can only attack, and its {T} abilities can only be activated, if its controller has continuously controlled that permanent since the beginning of their most recent turn.