Dagger Of Necrosis

This metal blade bends in a wicked, green, hooked curve. You gain a +1 to Att & Dmg rolls made with this magic weapon. When you hit, you CAN spend 1 Hit Die to deal an extra 3d6 necrotic damage.
•Curse Dagger. While cursed, whenever you receive magical healing, you must spend 1 hit die to regain any HP, at any point if you spend all your hit die.
YOU DIE.