Cheapest priced copy (Fallen Empires): $0.49 at Card Kingdom, near mint, their price list as of .
Spirit Shield 
Artifact · Rare · Fallen Empires · #90
You may choose not to untap this artifact during your untap step.
{2}, {T}: Target creature gets +0/+2 for as long as this artifact remains tapped.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Fallen Empires | 90 | Rare | $0.49 | — |