Cheapest priced copy (Duskmourn: House of Horror): $0.99 at Card Kingdom, near mint, their price list as of .
Floodpits Drowner 
Creature — Merfolk · 2/1 · Uncommon · Duskmourn: House of Horror · #59
Flash
Vigilance
When this creature enters, tap target creature an opponent controls and put a stun counter on it.
{1}{U}, {T}: Shuffle this creature and target creature with a stun counter on it into their owners' libraries.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
1 printing · $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duskmourn: House of Horror | 59 | Uncommon | $0.99 | $0.99 |
One ruling from Wizards of the Coast
- 20 September 2024If the target creature is an illegal target as Floodpits Drowner's last ability tries to resolve, it won't resolve and none of its effects will happen. Floodpits Drowner won't be shuffled into its owner's library.