Expert Mode-Only Content: This information (or parts of it) applies only to Expert mode and Expert mode worlds.
The Everlight is a Hardmodetool dropped by the Sun Pixie's Treasure Bag in Expert Mode. When held, it creates a large field of light around the player's cursor no matter where it is on the screen, useful for exploring caves and other dark areas. It also grants the ability to increase view range by right-clicking while held, similarly to the Rifle Scope and Sniper Rifle.