Stat notes I probably should have posted earlier:
Physical: Acquired Martial arts knowledge you can supply your host with, how much transforming can physically enhance your host, your skill in physical combat if you assume direct control.
Physical 10: You have the equivalent of a Black Belt in one Martial Arts style, and can share this skill with your host. You can physically enhance your host to the strength of a predatory animal.
Physical 20: You have the equivalent of a Black Belt in two Martial Arts styles, or the ability to fight at the level of a master in one. You can physically enhance your host to the strength of a man in powered armor.
Physical 30: You have created at least one form of Martial arts yourself, and can fight at the level of a master in multiple forms of martial arts. You can physically enhance your host to the strength of a Skinwalker, or a powerful faerie.
Magical: Your acquired stockpile of magical knowledge, and should you go to another universe, your ability to continue utilizing the rules of Dresdenverse magic to your benefit. A school of magic you can use without penalty elsewhere in the multiverse will receive a bonus in the Dresdenverse.
Magic 10: Your expertise in two forms of magic are beyond doubt. You are capable of instructing your host in their use, and can utilize these schools of magic at no penalty, regardless of your location in the multiverse.
Magic 15: You are capable of using hellfire to enhance your host's magic.
Magic 20: Your expertise in four forms of magic are beyond doubt. You are capable of instructing your host in their use, and can utilize these schools of magic at no penalty, regardless of your location in the multiverse.
Magic 25: You have sufficient skill with true names to utilize them at no penalty, regardless of your location in the multiverse.
Magic 30: Regardless of where you are in the multiverse, you are capable of using any form of magic a Dresdenverse mortal could perform at no penalty. You are one of the greatest authorities on magic within the Order of the Blackened Denarius.
Intellectual: Your skill in research and engineering, your ability to aid your host on a mental level.
Intellectual 10: You have the equivalent of three Doctorates, and can share your ability to understand any language with your host.
Intellectual 15: You can grant your host photographic memory.
Intellectual 20: You can accelerate your host's mental processes in short bursts without causing brain damage(Enough to have a brief conversation before a fight). You have the equivalent of six doctorates.
Intellectual 30: You can accelerate your host's mental processes without causing brain damage for long enough periods to be used in combat(Bullet Time). You could probably cause a singularity if you wanted to, because your intellect rivals that of Alex Mercer.
Social: Your force of personality, your knowledge of etiquette and practical psychology, and your ability to persuade your host
Social 10: While you have corrupted many hosts, a sizable portion of them are weak willed and non-influential. Your instincts on social matters are not sufficient to warn your host about mistakes they may be making when it comes to dealing with influential people(More Social improves your ability to read more important people)
Social 20: You have experience working with locally influential people, and individuals with enough supernatural power to be worth your notice. Your instincts on social matters are sufficient to warn your host about mistakes they may be making when it comes to dealing with influential people, and you would be capable of helping your host get elected to a local office.
Social 30: You have worked in the domains of Politicians and Leaders of all stripes, supernatural or otherwise. You have an instinctive knowledge of etiquette that does not fail, regardless of your situation, and even shame Lasciel when it comes to your ability to read and manipulate mortals. You could help your host get elected to a national office.