Key of Light

The Key of Light is a craftable item that spawns a Hallowed Mimic when placed inside of an empty Chest. The world must be in Hardmode and the Key of Light must be the only item inside the chest.

Spawning the Hallowed Mimic consumes both the Key of Light, and the chest.

Trivia

 * This and the Key of Night may be a reference to Kingdom Hearts.

History
Clé de lumière 빛의 열쇠 Ключ света 光明钥匙