Fighting Everdark Libra in Elden Ring Nightreign is honestly a bit of a nightmare. It's an exceptionally fun fight with a cool concept, but it's also just a lot to deal with, and will prove challenging for most players. While Everdark Augur was all about using a specific weapon skill, and Everdark Caligo had frost armour, Everdark Libra is all about modifiers.
The madness goat will keep adding conditions you have to deal with while fighting him, one of which includes summoning a band of Nightfarer invaders who mirror you. If you don't deal with these condemned quickly enough, he can potentially summon an additional three, for six invaders overall, which is as painful as it sounds. All that said, here's my recommended strategy for facing Everdark Libra in Nightreign, plus an explanation of what each of his modifiers actually does.
