Submerged Shipwreck

{t}: Add {u}{b} to your mana pool.
{3}, {t}: Put a plunder counter on Submerged Shipwreck. Create two colorless Treasure artifact tokens with "{t}, Sacrifice this artifact: Add one
mana of any color to your mana pool."
If this card has 3 or more plunder counters on it, sacrifice it. When a vehicle you or your
opponents control leaves the battlefield, return Submerged Shipwreck to the battlefield under
your control.