Cheapest priced copy (Eldritch Moon): $0.49 at Card Kingdom, near mint, their price list as of .
Coax from the Blind Eternities 
Sorcery · Rare · Eldritch Moon · #51
You may reveal an Eldrazi card you own from outside the game or choose a face-up Eldrazi card you own in exile. Put that card into your hand.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.49 to $0.59 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Eldritch Moon | 51 | Rare | $0.49 | $0.49 |
| Eldritch Moon Promos | 51s | Rare | — | $0.59 |
3 rulings from Wizards of the Coast
- 13 July 2016In a casual game, a card you choose from outside the game comes from your personal collection. In a tournament event, a card you choose from outside the game must come from your sideboard.
- 13 July 2016A card that is exiled face down has no characteristics. You can’t choose it, even if you’re allowed to look at it.
- 13 July 2016An Eldrazi card is one with the subtype Eldrazi. Noncreature cards with devoid from the Battle for Zendikar block are Eldrazi-themed, but they are not Eldrazi cards.