Gensokyo/Wolf Tengu Saber

The Wolf Tengu Saber is a Hardmode melee weapon. While it is equipped, enemies and hazardous blocks and objects will be highlighted. Furthermore, it grants the ability to increase view range by pressing and holding and moving the cursor.

Trivia

 * The Wolf Tengu Saber is a reference to the sword wielded by Momiji Inubashiri.