Ixalan

Kitesail Freebooter | Creature | Human Pirate | Flying When Kitesail Freebooter enters the battlefield, target opponent reveals their hand. You choose a noncreature, nonland card from it. Exile that card until Kitesail Freebooter leaves the battlefield. | Dan Scott

Seekers' Squire | Creature | Human Scout | When Seekers' Squire 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.) | Anthony Palumbo

Walk the Plank | Sorcery | | Destroy target non-Merfolk creature. | Kieran Yanner

Wanted Scoundrels | Creature | Human Pirate | When Wanted Scoundrels dies, target opponent creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.") | Volkan Baǵa

Dire Fleet Captain | Creature | Orc Pirate | Whenever Dire Fleet Captain attacks, it gets +1/+1 until end of turn for each other attacking Pirate. | Yongjae Choi