Ixalan

Dire Fleet Interloper | Creature | Human Pirate | Menace When Dire Fleet Interloper enters the battlefield, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.) | John Severin Brassell

Fathom Fleet Cutthroat | Creature | Human Pirate | When Fathom Fleet Cutthroat enters the battlefield, destroy target creature an opponent controls that was dealt damage this turn. | Josu Hernaiz

Lurking Chupacabra | Creature | Beast Horror | Whenever a creature you control explores, target creature an opponent controls gets -2/-2 until end of turn. | YW Tang

Sanctum Seeker | Creature | Vampire Knight | Whenever a Vampire you control attacks, each opponent loses 1 life and you gain 1 life. | Volkan Baǵa

Hostage Taker | Creature | Human Pirate | When Hostage Taker enters the battlefield, exile another target creature or artifact until Hostage Taker leaves the battlefield. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any type to cast that spell. | Wayne Reynolds

Admiral Beckett Brass | Legendary Creature | Human Pirate | Other Pirates you control get +1/+1. At the beginning of your end step, gain control of target nonland permanent controlled by a player who was dealt combat damage by three or more Pirates this turn. | Jason Rainville