Does Athene's Holy Grail's passive heal effect work on self-shields and self-heals?

I am asking mostly to consider the viability on mid-lane {{champion:43}}. The wording on items have always been tricky; especially with ally text. Also, as an addition, does the expose weakness mastery increase your own damage by 3% also? I know it used to, way back when, but I think it was changed to not include yourself anymore. If it still boosts your own damage, I am curious for why it is not used more often.
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