My understanding is that the Arcane Archer imbue effects should benefit from PL scaling similarly to spells. For imbue missiles I think that means .5 missile per PL and .25 PEN per PL. So if I'm PL 6 that should mean +2.5 (aka 2) missiles and +1.25 PEN. I'm seeing the additional missiles (I get 5), but not the additional PEN (it only shows a PEN of 7, which is the base). This seems like a potential bug, but I wanted to be sure I understood how it was intended to work.
Edited by TheWeaver, 03 January 2019 - 07:30 PM.