Welcome to Librarium Online!
This is my first post so go easy please
My idea was that Kroak would hide in a wood/anywhere out of line of sight and give a Skink Priest cloak of feathers and basically fly it into the enemy ranks making a march blocker and line of sight for Kroak, also with Kroaks improved telepathy you can mesure range from the Priest aswell so you basically have a flying lord kroak (apart from ward save) flying around your ranks casting spell after spell. This is NOT a competitive tatic so please go easy.
I dont know? it is very very very uncompetitive. you would have no close combat really (not enough points) so I supose mabye 100 skinks but you would be mashed try 3k