After testing some Runes on the PBE I wonder why press the attack also boosts your damage by 6-12%
It already provides infinitely stacking AD so the damage increase just feels as if it's tacked on for no other reason to have SOME damage in the runes. It feels cheap and somewhat of a bandaid and I would like to know why it's like this and why it just isn't a two part keystone with damage increase for mages and infinitely stacking ad for adc's and bruisers.