Talk:Skarner/@comment-25532677-20150409230838/@comment-35229418-20150417162611

It doesn't stack. It's bonus magic damage because the un-empowered cast deals only physical damage. So it's gonna be 20 / 30 / 40 / 50 / 60 physical damage for the first cast, and 40 / 60 / 80 / 100 / 120 damage (half physical, half magic) for subsequent casts.