The Euporia twinblade is one of the four legendary armaments introduced in Elden Ring's DLC Shadow of the Erdtree. This twinblade can be found in a secret section of Enir-Ilim, the late game area of the expansion. The Euporia features a special charge up mechanic that activates upon landing a few hits on the enemy, causing its blades to glow. This charge-up increases the weapon's holy damage and adds a new ranged ability for the duration that the luster lasts.