The Black Tide, Anetus' Ship

Crew 4, Plunder 4, Indestructible
As long as The Black Tide is a creature, pirates you control get +2/+1 and have plunder 1.
At the beginning of each your end steps, if
you control twenty or more treasure tokens, pirates you control gain indestructible until
your next turn.
The last thing many pirates ever see...