Cheapest priced copy (Duel Decks: Jace vs. Vraska): $0.35 at Card Kingdom, near mint, their price list as of .
Leyline Phantom 
Creature — Illusion · 5/5 · Common · Duel Decks: Jace vs. Vraska · #16
When this creature deals combat damage, return it to its owner's hand. (Return it only if it survived combat.)
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Jace vs. Vraska | 16 | Common | $0.35 | — |
| Gatecrash | 41 | Common | $0.35 | $0.49 |