Gloom Spear is a spear found in Tears of the Kingdom.
Tears of the Kingdom
The Gloom Spear is a fairly rare weapon, exclusively dropped by Phantom Ganon if it falls while it is wielding one. Its might is exceptional, though its durability is poor and prolonged use will sap the health of the user and apply Gloom to them, though this damage will never be fatal and will stop at 1 heart. It does not cause Gloom-based recoil if it is used as a fuse material for another weapon, though it's low durability is inferior to that of other fuse materials.