I don't like POTM, but I prefer Keeper/Pit Lord combo for when I am using Dryads. I use Howl of Terror on a group of enemies threatening my Dryads (hope my Lord survives
) then my Keeper at lvl 6 casts Tranq to heal them and the army (assuming I have it). Priestess is good at start if you want to end up with a nasty starfall, but if I resort to that I creep counter. I mostly use Rejeuv on my heroes to benefit thier life span a little longer, other then that I just bear form them and fight for melee.