Cheapest priced copy (Phyrexia: All Will Be One): $0.35 at Card Kingdom, near mint, their price list as of .
Offer Immortality 
Instant · Common · Foundations · #525
Target creature gains deathtouch and indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
2 printings · $0.35 to $0.69 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations | 525 | Common | $0.69 | — |
| Phyrexia: All Will Be One | 102 | Common | $0.35 | $0.49 |