Talk:Athene's Unholy Grail/@comment-26274286-20170604145437/@comment-4636093-20170604152147

Note that it can only heal equal to the initial shield/heal you cast. So if you shield someone for less than the number of charges you have then not all of them will be consumed.

Lux has a very small shield, only 110(+20%AP) at max rank. So yes, unless you had a lot of AP the outgoing shield wouldn't be able to consume all the charges by itself and would need the returning shield to use the rest of them.