Cheapest priced copy (Iconic Masters): $0.35 at Card Kingdom, near mint, their price list as of .
Ulcerate 
Instant · Uncommon · Foundations Jumpstart · #499
Target creature gets -3/-3 until end of turn. You lose 3 life.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.35 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Iconic Masters | 112 | Uncommon | $0.35 | $0.79 |
| Jumpstart 2022 | 481 | Uncommon | $0.35 | — |
| Foundations Jumpstart | 499 | Uncommon | $0.35 | — |
| Magic 2015 | 119 | Uncommon | $0.35 | $0.99 |
One ruling from Wizards of the Coast
- 17 November 2017The loss of life isn't a cost. If the target creature is an illegal target when Ulcerate tries to resolve, it won't resolve and none of its effects will happen. You won't lose any life.