Blood Imbue

Blood Imbue is a blood spell that can be purchased from the Nether Dungeon's shop. When activated, it will drain 8 hearts of the user's health, and imbue any sword/axe/Youmuu's Toastblade that is in their offhand, giving it a permanent +1 attack damage and -1 heart container to whoever wields it. This effect can be used on any given weapon up to 4 times.