Ixalan

Air Elemental | Creature | Elemental | Flying | Tomasz Jedruszek

Prosperous Pirates | Creature | Human Pirate | When Prosperous Pirates enters the battlefield, create two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.") | Josh Hass

Spell Swindle | Instant | | Counter target spell. Create X Treasure tokens, where X is that spell's mana value. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.") | Victor Adame Minguez

Wind Strider | Creature | Merfolk Wizard | Flash Flying | Magali Villeneuve

Deadeye Plunderers | Creature | Human Pirate | Deadeye Plunderers gets +1/+1 for each artifact you control. {2}{U}{B}: Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") | Greg Opalinski