Cheapest priced copy (The Lost Caverns of Ixalan): $0.35 at Card Kingdom, near mint, their price list as of .
Waylaying Pirates 
Creature — Human Pirate · 3/3 · Common · The Lost Caverns of Ixalan · #85
When this creature enters, if you control an artifact, tap target artifact or creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Lost Caverns of Ixalan | 85 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 10 November 2023The enters-the-battlefield ability can target an artifact or creature that's already tapped. If so, you'll just put a stun counter on that artifact or creature.