<Yeah, you're getting an extra level in Anti-Paladin* because you chose Sephiroth as your new character icon>
Once ready, Thaddeus is laid onto the ground and his hands placed over himself. The wizards that volunteer for the ritual stand over him and begin incanting the spells. It can be watched their movements, as they combust spell components that spark over your, giving command to the power that they hold.
Over time, Thaddeus' body will feel still. He'll feel as if something was pouring over his body, several times in fact as if several layers are painted over and at times he will have sudden compulsions to blink but not know why.
What was promised an hour will seem like much longer when filled with uncertainty and pause, and constant repetition and chanting of the spell words for the ritual.. but finally... it will end.
A mirror is wheeled in after Thaddeus stands up, and he can see that he appears as a surface elf, skin and eye color altered to match that of other elves. In fact, the very well designed and formal wear he has almost makes him appear like a high elf, but with obvious lack of royal trappings. While standing behind the corner of the mirror, one of the spellcasters asks, "How do you like it?"
<*I'm joking, don't make hard to undo changes to your character sheet>