Karma Top build ideas, any suggestions?

I've been messing around play 5-stack fill role flexes and when I get toplane, I've been trying to think of builds for the supports I play in the toplane. I know Karma top is a very good counter pick which is sometimes pro-play viable, but i don't know where to start on a build. My first thoughts are Malignance into frozen heart vs AD juggernauts or malignance into cosmic drive into people I need to poke down and outmaneuver, but beyond that I haven't got a clue. Does anyone have any pointers?