Cheapest priced copy (Duel Decks: Elspeth vs. Kiora): $0.35 at Card Kingdom, near mint, their price list as of .
Soul Parry 
Instant · Common · Scars of Mirrodin · #21
Prevent all damage one or two target creatures would deal this turn.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Elspeth vs. Kiora | 24 | Common | $0.35 | — |
| The List | DDO-24 | Common | $0.35 | — |
| Scars of Mirrodin | 21 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 1 January 2011Soul Parry prevents all damage the targeted creatures would deal this turn, not just combat damage.