Soulgleam Lantern (Patreon)

Wondrous item, uncommon

A tarnished metal lantern pulled from the murky depths. While holding this lantern you can use it as a spellcasting focus. This lantern can hold up to 3 charges and regains a charge when a humanoid creature is killed within 20 feet of it.

Deathly Glow. As a bonus action, you can spend a charge to light this lantern with a ghastly luminescence. While lit, this lantern emits a cold bright light in a 30-foot cone and dim light for an additional 15 feet for 1 hour or until you use a bonus action to extinguish the light. While in the bright light, creatures cannot regain hit points. You can choose what direction you aim the cone on your turn (no action required). This light cannot be smothered or quenched, but if the Turn Undead feature is used while this lantern is in range, goes dark and cannot be lit for 24 hours.

Many a tale be spun 'buot ol' Billy Cross, most fearsome pirate to fly the skull and bones. Wicked with both tongue and blade, his rampage ‘cross the seas left a legacy spread so far and wide that it lives on to this very day. Even now, decent sailors and ruthless pirates alike be wary of any lights of a spectral persuasion seen adrift the open waters, for it was said the cold flame within Billy's lantern hungered eternal for the souls of his victims.