Increased life regen while on the surface at day. 10% of the sum of all damage types is added to your current weapon's attack. Being near mud greatly increases your stats and life regen
The Photosynthesizer is a HardmodeExpert mode exclusive accessory that increases life regen on the Surface during day, increases weapon damage with 10% of all class damage. Standing near Mud Blocks greatly increases various stats and life regen.