User blog comment:JmLyan/Roon, the Wielder of Relics/@comment-32109419-20151217153212

A nice concept utilizing a new resource and focusing on AD on-hit damage. (Crit too)

Things I'm wondering about is does the Q and R passive have a limit? Otherwise the E CD refund should be a little lower, otherwise teamfighting in minions to regain Sigils would be really strong. Reducing it's range might be something too, it is wider than AoE (350) I think around 250-300 instead should be it.

W and R are interesting but R has a little too low CD for it's effect over time.

So I would guess building a mix of on-hit and crit is what you want. (Rageblade application interacting with E?) BotrK, (Rageblade) and IE/Death's Dance should all be good for Roon