Cheapest priced copy (Duskmourn: House of Horror): $0.79 at Card Kingdom, near mint, their price list as of .
Ethereal Armor 
Enchantment — Aura · Uncommon · Duskmourn: House of Horror · #7
Enchant creature
Enchanted creature gets +1/+1 for each enchantment you control and has first strike.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
7 printings · $0.79 to $19.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duskmourn: House of Horror | 7 | Uncommon | $0.79 | $1.49 |
| Year of the Rabbit 2023 | 5 | Rare | — | $11.99 |
| The List | Q06-2 | Common | $1.29 | — |
| Pioneer Challenger Decks 2021 | 2 | Common | $0.79 | — |
| Return to Ravnica | 9 | Common | $0.99 | $5.99 |
| Time Spiral Remastered | 293 | Special | $2.49 | $19.99 |
| Wilds of Eldraine Commander | 67 | Common | $0.99 | — |
One ruling from Wizards of the Coast
- 19 March 2021Ethereal Armor counts each enchantment you control, including itself and any Auras you control that are attached to an opponent or to permanents controlled by an opponent.