Cheapest priced copy (The List): $0.35 at Card Kingdom, near mint, their price list as of .
Empyrial Armor 
Enchantment — Aura · Common · Weatherlight · #13
Enchant creature
Enchanted creature gets +1/+1 for each card in your hand.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
4 printings · $0.35 to $10.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Arena League 2001 | 8 | Rare | — | $10.99Out of stock |
| The List | WTH-13 | Common | $0.35 | — |
| World Championship Decks 1998 | bh13 | Common | $0.35 | — |
| Weatherlight | 13 | Common | $0.35 | — |
One ruling from Wizards of the Coast
- 4 October 2004The value of X is recalculated constantly, so this card’s bonus varies as the number of cards in your hand varies.