Gáe Bulg

Gáe Bulg (translated: Belly Spear) was made from the bone of a sea monster, the Curruid, that had died while fighting the glamoured form of the Leviathan.   You have a +3 bonus to attack and damage rolls made with this magic weapon.   30 Barbs. When Gáe Bulg strikes an opponent, they must make a DC 15 DEX Save. Nothing happens if the save is made. However, if the save is failed, Gáe Bulg is imbedded into the target and 30 barbs open and extend inside the creature. The impaled creature cannot heal naturally or magically until Gáe Bulg is removed. Removing Gáe Bulg takes an action, which can be done by an opponent. When Gáe Bulg is removed it causes 10d6 damage to the creature it was impaled within.   The 30 barbs effect can only be used once per long rest, and to refresh the charge a ritual must be performed with Gáe Bulg being submerged under water.   Proficiency with a Spear allows you to add your proficiency bonus to the attack roll for any attack you make with it.