Cheapest priced copy (Streets of New Capenna): $0.35 at Card Kingdom, near mint, their price list as of .
Sleep with the Fishes 
Enchantment — Aura · Uncommon · Streets of New Capenna · #61
Enchant creature
When this Aura enters, tap enchanted creature and you create a 1/1 blue Fish creature token with "This token can't be blocked."
Enchanted creature doesn't untap during its controller's untap step.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Streets of New Capenna | 61 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 29 April 2022If the creature targeted by Sleep with the Fishes isn't a legal target at the time it would resolve, Sleep with the Fishes is put into its owner's graveyard from the stack. It's not put onto the battlefield and then put into their graveyard. Notably, this means that its controller will not create a Fish token.