Ascian Prime

Ascian Prime is a boss in Final Fantasy XIV. It is fought as the final boss of the Aetherochemical Research Facility, and is the penultimate boss of Heavensward.

Battle
The Ascian Prime is much more dangerous than Lahabrea or Igeyorhm. At certain points in the fight, he will gather two immense orbs of fire and ice. One of these must be destroyed before he finishes casting Annihilation, or the party will be instantly wiped out.

After this, several black orbs appear. Players should get inside them to avoid his Universal Manipulation attack.

Once his health drops below 30%, orbs will continuously be tethered to players and should be detonated away from others.

Music
The theme played when Ascian Prime appears is called "The Maker's Ruin".