Cheapest priced copy (The List): $2.49 at Card Kingdom, near mint, their price list as of .
Steel of the Godhead 
Enchantment — Aura · Common · Shadowmoor · #150
Enchant creature
As long as enchanted creature is white, it gets +1/+1 and has lifelink. (Damage dealt by the creature also causes its controller to gain that much life.)
As long as enchanted creature is blue, it gets +1/+1 and can't be blocked.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
3 printings · $2.49 to $34.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Venser vs. Koth | 30 | Common | $2.99 | — |
| The List | SHM-150 | Common | $2.49 | — |
| Shadowmoor | 150 | Common | $2.99 | $34.99 |
One ruling from Wizards of the Coast
- 1 May 2008If the enchanted creature is both of the listed colors, it will get both bonuses.