Cheapest priced copy (The Brothers' War): $0.79 at Card Kingdom, near mint, their price list as of .
Spectrum Sentinel 
Artifact Creature — Soldier · 1/2 · Uncommon · The Brothers' War · #244
Protection from multicolored (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything multicolored.)
Whenever a nonbasic land an opponent controls enters, you gain 1 life.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.79 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Brothers' War | 244 | Uncommon | $0.79 | $2.49 |