A/N - So I decided to make this just because it will hopefully make things a little easier to understand, mainly going to be genetic skills/predispositions, be them good or bad.
House Potter/Harry Potter
Transfiguration - Comes easier, he'll have a more intuitive grasp on it.
Charms to a minor degree - It will be easier and require less energy but it won't be effortless.
DADA/Combat Magics - He managed to teach school kids his age or younger the patronus, he can throw off the Impirius, I'm going to have him get better until he is pretty much a one man army, (OMA for future reference)
Animals/Creatures - He's good with animals and stuff, plus he can talk to snakes and I may use that.
Might throw in more for him and any kids he has but that's it for now.
House Black/Sirius Black - lesser extent, Harry
Dark Arts - I figure some Black in the middle ages or something decide to sacrifice like 100 virgins or something and make it easier for the family to use, plus it plays into the next point.
Black Family Madness(BFM now) - It seems constant use of the Dark Arts drives people mad, Tom, GG, Bellatrix and Wabulga are the only examples we have of crazy/heavy dark arts users and I want there to be a negative effect.
Minor Transfiguration, Potion and Runes - Old family, I doubt that they'd not make the kids learn potions before school, even just theory same with runes.
:4/03/20: Sirius is at the very least above average leaning towards good but rusty, has potential to be a master.
History that I am making, there are Godfather/mother oaths, Sirius takes it a step further, he blood adopts Harry a few days after birth, with James and Lily's permission, wham bam that's that.
I will be using the fanfic error that Charles and Dorea are Harry's grandparents, I feel it fits in better and I can portray them however I want.
That's it for now, may add to it later.
P.S. Harry has all House Potter abilities and traits' Sirius has the Black ones, his madness won't be especially prevalent however.
Updating constantly