Cheapest priced copy (Tarkir: Dragonstorm Promos): $0.49 at Card Kingdom, near mint, their price list as of .
United Battlefront 
Sorcery · Rare · Tarkir: Dragonstorm · #330
Look at the top seven cards of your library. Put up to two noncreature, nonland permanent cards with mana value 3 or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
4 printings · $0.49 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Tarkir: Dragonstorm Promos | 32p | Rare | $0.49 | $0.49 |
| Tarkir: Dragonstorm Promos | 32s | Rare | — | $0.59 |
| Tarkir: Dragonstorm | 32 | Rare | $0.59 | $0.49 |
| Tarkir: Dragonstorm | 330 | Rare | $0.59 | $0.99Out of stock |
One ruling from Wizards of the Coast
- 4 April 2025If a card in a library has {X} in its mana cost, X is 0 for the purpose of determining its mana value.