Guide:Empress of Light strategies

The Empress of Light is a Hardmode post-plantera boss fought in the Hallow.

Summoning
The Empress of Light can be summoned by killing a Prismatic Lacewing, which is a rare Critter that spawns in the surface Hallow during the night once Plantera has been defeated in the world. As it is a rare creature, it can be detected by the Lifeform Analyzer. The Prismatic Lacewing must be killed at night to summon the boss.

Like most critters, the Prismatic Lacewing can be caught with any bug net, which can then be released, and killed, by the player manually.