The Perisno Sun Sword is a legendary weapon. The method for obtaining this weapon in-game (outside of the Mystic Merchant) are currently unknown, but what is known is that it does 63 slash damage and very low stab damage, making it the most powerful non-ranged weapon in the game.
As of 0.8, the sword can be obtained from the Mystic Merchant. It is also held by Perisno Holy Champions.
Required Strength: 15