Cheapest priced copy (Chronicles): $0.35 at Card Kingdom, near mint, their price list as of .
Living Armor 
Artifact · Uncommon · The Dark · #104
{T}, Sacrifice this artifact: Put X +0/+1 counters on target creature, where X is that creature's mana value.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
3 printings · $0.35 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Chronicles Foreign Black Border | 103 | Common | — | — |
| Chronicles | 103 | Common | $0.35 | — |
| The Dark | 104 | Uncommon | $0.35 | — |