I really like this list, it seems really defensive provided you don't let your infantry stroll too far from kroak. It has the potential to get rid of scary heroes, banners, and monsters with all its strong ranged shots from the basti and with kroaks spells, while leaving your eternal starhost to just chill and wipe out anything that gets too close to kroakYeah at more than a third of your army he is kind of a burden, but here are a few that you could try.
Good old eternal starhost:
Leaders
Lord Kroak (540)
Saurus Eternity Warden (140)
Units
Saurus Guard x 5 (100)
- Seraphon Battleline
Saurus Guard x 5 (100)
- Seraphon Battleline
Saurus Guard x 5 (100)
- Seraphon Battleline
Gryph-Hound x 1 (40)
Behemoths
Bastiladon (300)
Battalions
Eternal Starhost (80)
Scenery
Balewind Vortex (100)
Total: 1500