Cheapest priced copy (Aether Revolt): $0.35 at Card Kingdom, near mint, their price list as of .
Lifecrafter's Gift 
Instant · Uncommon · Aether Revolt · #114
Put a +1/+1 counter on target creature, then put a +1/+1 counter on each creature you control with a +1/+1 counter on it.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Aether Revolt | 114 | Uncommon | $0.35 | $0.49 |
| Commander Legends | 240 | Common | $0.35 | $0.49 |
| Jumpstart | 409 | Uncommon | $0.35 | — |
4 rulings from Wizards of the Coast
- 10 November 2020If the target creature is an illegal target by the time Lifecrafter's Gift tries to resolve, the spell doesn't resolve. No creatures receive +1/+1 counters.
- 10 November 2020If there is a +1/+1 counter on a noncreature permanent you control, such as a Vehicle that isn't crewed, it won't get another one from Lifecrafter's Gift.
- 10 November 2020The state-based action that removes matching +1/+1 and -1/-1 counters won't check until after Lifecrafter's Gift finishes resolving. It's possible put a +1/+1 counter on a creature with a -1/-1 counter on it and then give it a second +1/+1 counter.
- 10 November 2020Each +1/+1 counter put on the target creature is a separate event. Replacement effects may affect each of these counters being put on the creature.