Curse of Black Sails

When Curse of Black Sails enters the battlefield,
create a Treasure token. (It's an artifact with,
"{t}, Sacrifice this artifact: add one mana of any
color.")
Whenever a nontoken Pirate you control dies,
create a 2/2 black Zombie Pirate creature token
with menace.
Sacrifice Curse of Black Sails unless you control
a Treasure.