Kigan had ordered the Maw to prepare a Decay Bastion, but he didn't know if it would make it in time or if it would be enough to survive the Annihilation. To defend the two women from eight Divine Beasts, he had taken quite a beating.
His bones had broken and mended several times already. He had ignited his life force over and over again to burn the incoming spells and heat the air enough to make it breathable for Kamila and Zinya.
His Adamant-coated tail feathers whipped at the maces, taking the brunt of the damage and deflecting the incoming strikes. His wings flapped, releasing wave after wave of Origin Flames. Yet it wasn't enough.
Kigan's best means of attack, turning himself into a living mass of Cursed Elements, and of defense, becoming a living shadow, were useless. One would have killed Zinya and Kamila, the other would have left them open to the relentless onslaught.
