“The magic powering you isn’t infinite and can start eating your soul if you don’t watch it,” said Amanita, adjusting Circe’s position. “You need extra magic to keep your body from rotting. You can only eat certain things that are metaphysically tied to death, like unleavened black bread or unfermented wine. Damage to your body can only repaired with magic. You can’t feel the damage you’re doing to yourself since you can’t feel pain. If somepony ever dispels the magic around you, you stop being undead instantly and go back to being plain old dead. You slowly grow more aware of just how disgusting your body is. Your will can easily be subverted by necromancers. You become a transmission vector for deadly diseases.” She raised an eyebrow at Bitterroot. “Would you like me to continue?”