There's some pretty standard RPG stats:
The Gods....or God.....or nothing decides one day that you can now max one of your basic stats out.
Whichever stat you picks gets an increase to crazy fooking levels.
If you take strength then you get class 100 str.
If you take defense your skin becomes akin to whatever charm in Exalted makes something impossible to damage ( I know there has to be one )
If you take HP then you can be hurt but it takes a metric ton of actual damage to put you down. Think Alucard style regeneration.
That sorta thing.
What do you pick?