Thunder Cannon

Thunder Cannons were four-story tall mortars used by the ancient Ifrit in warfare. They were said to be able to launch projectiles to other spheres.
The Koa attempted to revive the artifact at a blacksite called Port Loa, whereupon it fell into the hands of the White Lion Armada. With the help of Apppoline, the Party destroyed the prototype and defeated the White Lion Presence there. Anh also destroyed the schema used to build the Thunder Cannon so that, for better or worse, the ancient weapons will never be seen on the spheres again.