Vamparic Regeneration

You spend a certain time doing necromantic movements and chanting, doing so, your eyes go cloudy and bloodshot. you feel an internal pain as your canines are extending and your senses are being heightened. you can smell the blood of any corpse near by if they have died within a day. you are compelled to drink of their blood or willingly if you want this. when you drink off the corpse, when drinking the blood, you reagin hit points equal to 3d8+4+ your spellcasting modifier+ your character level. if the corpse is over a day old, it is deemed diseased and you are poisoned for one minute.