User blog comment:Emptylord/2017 Patch Notes (Unofficial)/@comment-1920550-20170705151957/@comment-3974211-20170705212629

I think the issue with tank itemization at the moment, particularly on Galio's kit, is the amount of %Damage Reduction - which penetration doesn't counter in any form. I think that the Ground effect on Void Ooze would actually help Kog immensely against most tanks, although perhaps the effect could be swapped to sapping resistances - I don't think he should have both, though.