Cheapest priced copy (Secrets of Strixhaven Commander): $0.35 at Card Kingdom, near mint, their price list as of .
Mortality Spear 
Instant · Uncommon · Secrets of Strixhaven Commander · #321
This spell costs {2} less to cast if you gained life this turn.
Destroy target nonland permanent.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.35 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Secrets of Strixhaven Commander | 321 | Uncommon | $0.35 | — |
| Strixhaven: School of Mages | 207 | Uncommon | $0.35 | $0.79 |
| Strixhaven: School of Mages | 380 | Uncommon | $0.79 | $0.99 |
One ruling from Wizards of the Coast
- 16 April 2021To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions (such as that of Mortality Spear). Mortality Spear's mana value is always 4, no matter what the total cost to cast it was.