Succubus transform

"There's no way this could work." You say to your best friend Donavan as he's reading an old book he found. "Have a little faith, I lull thus off we have our own sexy Succubus to fuck as much as we want!" "Can't they kill people by draining them of all their energy?" "When they're summoned they're bound to a contract, so they can't kill anyone and have to do what I say. Okay, moment of truth!" He recites a spell, the words completely alien. The book glows and a bright pink ball rises from it, then flues straight into your body! You start to feel really hot...