Deep Staff

The Deep Staff is a radiant weapon that is found in Scarlet Chests and Scarlet Crates. It shoots a dark purple bolt at the cost of life, which travels in a straight line and inflicts the Shadowflame debuff. If the struck enemy is immune to Shadowflame, it will be inflicted with the Light Curse debuff instead. When used, the ally with the least amount of health will receive life equivalent to half of the weapon's life cost.