Why AP Shen?

I am not a high elo player, so that is why I always trolls with champions.
Well Just Tanky Shen is just a bit boring for me, so this is just a trolling guide for fun.
Shen's all Skills deals with Ability Power and a bit of health on his Q, so that is why I build AP Shen.
And if Shen builds AP items, his mini shield (W) will plus a bit more shield on saving yourself, and of course also on Shen's Ult!! It adds lots of White shield on to your teammate while you are saving him.