Cheapest priced copy (Dark Ascension): $0.35 at Card Kingdom, near mint, their price list as of .
Faith's Shield 
Instant · Uncommon · Dark Ascension · #7
Target permanent you control gains protection from the color of your choice until end of turn.
Fateful hour — If you have 5 or less life, instead you and each permanent you control gain protection from the color of your choice until end of turn.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dark Ascension | 7 | Uncommon | $0.35 | $0.49 |
3 rulings from Wizards of the Coast
- 22 January 2011A player with protection from a color can’t be damaged, enchanted (including by Curses), or targeted by anything of that color.
- 22 January 2011You choose only one color (not one color per player and permanent). You choose the color as Faith’s Shield resolves.
- 22 January 2011Faith’s Shield targets a permanent regardless of how much life you have. If that permanent is an illegal target when Faith’s Shield tries to resolve, Faith’s Shield won’t resolve and none of its effects will happen. Neither you nor any of your permanents will gain protection from a color.