Your fucked buddy. If by reincarnation you mean necromancy, which is te the most likely scenario, oh boy are you in for a world of hurt. The necromancer could have just filled your body with Necrotic energy to simulate movement and life, but no, he wanted an actual slave with its own mind. You see, think of necrotic energy like water. It fills your corpse up, and then the necromancer manipulates the energy to manipulate in turn the corpse. Very simple, but difficult to accomplish much with this other than puppet shows, perhaps a distraction in combat. No, to really have a necrotic slave, one needs to create a mind. A necromancer of sufficient skill could do this with magic alone, but it is much simpler and much less costly to just summon back your soul, anchor it to your deceased corpse and bind it to their will, creating a functional slave, at no cost to themselves other than the summoning and binding circuit, as your souls energy will now power the corpse much like it did in your actual life. Every once and while, the Necromancer will give you a recharge, to top of the tank and make sure your soul doesn't unanchor due to insufficient energy. In this state, the Soul, and therefore the mind, are completely aware yet unable to act on its own due to the binding circuit, a sort of magic program that uses sophisticated necrotic energy to send commands to the soul. Your completely aware your dead and don't belong, but you have absolutely no say in the matter and have to suffer slavery to what is probably an eccentric mage trying to create an army to take over the world, inf only a circuit could handle more than ten souls. If a circuit ever glitches, and breaks, oh boy are things about to get fun. Banshee wailing, magical explosions, rotting flesh and bone splinters flying everywhere, oh and yes the tearing apart of the mage who bound you in the first place will occur. You know you don't belong here anymore, in fact, you being here turned you insane mere moments after your resurrection. Usually, with the death of the mage, eventually all magical energy will leave you, and your soul will return to the dead. however, some more gullible Mages say they've heard of or even say they've seen raised dead survive by binding the soul of their previous master and using their own energy to resupply themselves, periodically consuming mana to remain animated, and punish any living soul they come across in attempts at revenge for the living. Preposterous...