The most recent sale Id seen of a similar card had it at around $50, but that was months ago
It's also an atrocious card to draw when you're top-decking
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The idea is to maximize cards like Ethereal Armor by having many enchantments in play and ways to reduce the mana cost of enchantments
US$11.10 Ensky Options Facebook Print Twitter Description Info Specifications Info SKU:SKY47449 ,UPC: ,Shipping: Info SKU: SKY47449 UPC: 4970381474492 Shipping: Calculated at Checkout Specifications Series, Specifications Series: Magic: The Gathering Description Qty: 80 Pcs Size: 67 x 92mm Material: CP, OP/VMCP Printing: 4 Colors + White Frequently Bought Together: Inc
On top of that, cards can carry a staggering variety of abilities like deathtouch (any creature taking damage from something with this is instantly defeated) or lifelink (you gain health based on the amount of damage a card deals)