"Lungs full of sea air and a hold full of loot. Ah, what a life!"

Corsair Captain

When this creature enters, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")
Other Pirates you control get +1/+1.

When Corsair Captain enters the battlefield, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")
Other Pirates you control get +1/+1.

Foundations

The Lost Caverns of Ixalan Commander

When Corsair Captain enters the battlefield, create a Treasure token.
Other Pirates you control get +1/+1.