Cheapest priced copy (Magic Origins): $0.49 at Card Kingdom, near mint, their price list as of .
Gaea's Revenge 
Creature — Elemental · 8/5 · Rare · Magic Origins · #177
This spell can't be countered.
Haste
This creature can't be the target of nongreen spells or abilities from nongreen sources.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.49 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Magic 2011 | 174 | Mythic | $0.99 | $1.49 |
| Magic Origins | 177 | Rare | $0.49 | $0.49 |
| The List | ORI-177 | Rare | $0.49 | — |
| Magic Origins Promos | 177s | Rare | — | $0.59 |
4 rulings from Wizards of the Coast
- 15 August 2010Gaea's Revenge's last ability applies to all nongreen spells and abilities from nongreen sources, including ones you control. For example, you can't target it with the equip ability of an Equipment you control (unless the Equipment is somehow green).
- 15 August 2010Gaea's Revenge's first ability works only while it's a spell on the stack. Gaea's Revenge's last ability works only while it's on the battlefield.
- 15 August 2010A Gaea's Revenge spell can be targeted by spells and abilities that would counter it. The part of their effect that would counter Gaea's Revenge won't do anything, but any other effects those spells or abilities may have will still happen, if applicable.
- 22 June 2015If a spell is one or more colors, and one of those colors is green, that spell can target Gaea's Revenge.