FINAL FANTASY XIV: Shadowbringers- Castrum Lacus Litore

This is a Critical Engagement Run at the Southern Bozjan Front instance, which is unlocked when you hit rank 10 and unlock a quest. It has a semi-random spawn time so it may be a while before you see it spawn. Recommended number of players needed to gather is at least 32, especially at the end to get past the dps check.