JohnGrimm

Because it's nothing but his heaviest hitting normal over and over again. The scaling still kicks in, but because it's nothing but one of his strongest attacks repeated it does obscene damage.

I don't think I have to explain this combo at all.

Probably just the keyboard. I didn't really have any trouble with it.

Well the notes I read said it was an overhead, so if it's not then oh well. I personally don't like the timing of 5A after a 214A, it's too tight of a link to be reliable in my opinion. Also, I'd think because of the "rekka A rekka rekka normal rekka A rekka rekka normal" thing you've got going on the damage scaling would be pretty bad.

Worked out a corner double overhead combo with Rouga starting with that 6B. Basically an overhead variation of the combo Mr. Cartpusher posted. 6B xx j.214A 5C xx 214B 5B xx 214A DELAY 214B 5B 5C j.B j.A j.B 214A 3242 damage on Senna, should be universal.