Cheapest priced copy (Duskmourn: House of Horror): $0.35 at Card Kingdom, near mint, their price list as of .
Boilerbilges Ripper 
Creature — Human Assassin · 4/4 · Common · Duskmourn: House of Horror · #127
When this creature enters, you may sacrifice another creature or enchantment. When you do, this creature deals 2 damage to any target.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duskmourn: House of Horror | 127 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 20 September 2024You don't choose a target for Boilerbilges Ripper's ability at the time it triggers. Rather, a second "reflexive" ability triggers when you sacrifice another creature or enchantment this way. You choose a target for that ability as it goes on the stack. Each player may respond to this triggered ability as normal.