Cheapest priced copy (Eventide): $0.35 at Card Kingdom, near mint, their price list as of .
Gift of the Deity 
Enchantment — Aura · Common · Eventide · #122
Enchant creature
As long as enchanted creature is black, it gets +1/+1 and has deathtouch. (Any amount of damage it deals to a creature is enough to destroy that creature.)
As long as enchanted creature is green, it gets +1/+1 and all creatures able to block it do so.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Eventide | 122 | Common | $0.35 | $2.49 |
One ruling from Wizards of the Coast
- 1 August 2008If the enchanted creature is both of the listed colors, it will get both bonuses.