Armor-Piercing Theory...

See below...

Magic and Armor-Piercing

I like JUST armor-piercing in:

1) My body that moves with me, equipment proper, and

2) In my being (that is much more popular).

I used to use armor-piercing in me, the entire stack, in about all of spells, and nothing as well.  Roughly that.  But< SEE THIS<, I changed my theory to 'lock and key theory' of armor-piercing.'  My theory is this: what makes more armor-piercing more helpful than the right energy of the enemy or the right amount of armor-piercing (or close to that?) for the spell to work?  

So, I mostly shoot about 10 percent no armor-piercing, 45 percent armor piercing from me (random positive amounts of any value or none), and 45 percent my armor-piercing in me (a random amount).  I think this is more effective at beating counter-magic.

That is my theory on armor-piercing and amount of it.  I also note that strength of spell gets higher with higher armor-piercing, I think, the weight theory of magic and armor-piercing.

Hope this helps and is (at least) largely right.