Illuga Build Guide

Illuga is a 4 star Geo Support focused around the Lunar Crystallize Reaction. Illuga is able to provide significant buffs to both Geo DMG and Lunar Crystallize DMG, with the latter gaining a decent bit more. He does this by buffing the Crit Rate and Crit DMG of Geo and Lunar Crystallize DMG dealt to opponents, but also providing additional DMG to damage instance of either type. He will also buff the EM of his teammates alongside the above. These buffs are teamwide, have high uptime, and besides the quill effects of additional DMG, are unlocked entirely through his Skill.

Illuga primarily finds himself in Zibai teams and other Lunar Crystallize teams. His additional DMG effects can only be used up by the on-fielder, and Zibai is the best at using them. While Illuga is not highly reliant on his Constellations to function, his C2, C4, and C6, are all significant power-ups for him and his team.