Empress of Light

The Empress of Light is a Hallow boss. It is summoned by killing a Prismatic Lacewing at night in the Hallow. The Prismatic Lacewing will only spawn after Plantera has been defeated.

Strategy
The boss uses fast-paced multicolor attacks similar to the Prismatic Crystal weapon. It would be wise to defeat Golem first, so the Cosmic Car Key will become available. She has two attack patterns: In the first, she will alternate between various attacks in which multiple projectiles home in on the player. In the second stage, she will fire projectiles across the screen in straight lines at various angles.

Trivia

 * This boss was described as "a beautiful bullet hell" by Cenx before 1.4 was released.


 * If you are to take on this boss the moment it becomes available to you, it can be considered the hardest boss in the game, beating both the Moon Lord and Duke Fishron in difficulty.
 * Similar to Skeletron Prime, if she is fought during the day, all of her attacks will deal massive amounts of damage, killing the player instantly. However, unlike Skeletron Prime, if the Empress is killed during the day she will drop the Terraprisma, whereas Skeletron Prime has no additional drops.
 * It may be helpful to reduce the boss to very low health just before dawn, then intentionally delay killing her until sunrise begins to obtain the Terraprisma. Players may find a watch or its upgrades useful to track the start of Day.