Nubbe Centre

[Kaden]

Don't get AP items on Ashe. It's a waste. It can be fucking hilarious, but it's not anything you'd want to do if you're trying to, like, win. Tear of the Goddess is not an AP item, but since it only builds into an AP item, you should treat it as an AP item in your head.

Manamune.

Still wouldn't get it on Ashe, but there is an AD option.

EDIT: So, basically, no matter how many or what combinations of Manamune, Archangel's Staff, or Tear of the Goddess you have, you can't get more than a bonus 1000 MP from them.