All creatures in the same column as A-P cannot att. (A-P excluded). Specials played in the same column as A-P require 1 extra card to be discarded from the player's hand to play. When A-P is in defense position, you may flip him facedown and move him into the Specials row once per turn (cannot do either). You gain 1 LP at the start of every turn and lose 2 LP at the end of every turn (including both players') if A-P is in the Specials row.
Personally my favorite God card, in terms of drawing quality. While I like H-C more as a character, A-P is better drawn and conceptualized to me. I got the idea for those floating balls from the funnels in Strike Freedom Gundam and the original Gundam series (one of the movies, I believe). I wasn't sure which "element" to make A-P at first, and the I thought of Onua from Bionicle for no reason. I think A-P fits the Death God role more than Y-D, but oh well (it also reminds me of that valley in Majora's Mask).