Gensokyo/Swallow's Cowrie Shell

The Swallow's Cowrie Shell is a Hardmode accessory. If the item is equipped and the player takes a hit that would normally be lethal, 15% of the player's maximum health is instantly restored. In addition, beams of light are fired into all directions, damaging and knocking back nearby enemies. Afterwards, the effect cannot trigger again for 30 seconds.