Cheapest priced copy (Zendikar Rising): $0.35 at Card Kingdom, near mint, their price list as of .
Zulaport Duelist 
Creature — Human Rogue · 1/1 · Common · Zendikar Rising · #88
Flash
When this creature enters, up to one target creature gets -2/-0 until end of turn. Its controller mills two cards. (They put the top two cards of their library into their graveyard.)
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Zendikar Rising | 88 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 25 September 2020If the target creature is an illegal target by the time Zulaport Duelist’s ability tries to resolve, the ability doesn’t resolve. No player mills two cards.