I did only 1 star Forest of the Demonic beasts. My few blacks or shrine plats are useless on that map due to the low cost. 3 Starred all other maps. Not worth spending all that charisma and stamina trying out for that last SC and Rainbow spirit. Nice to have a challenge. But not when it requiers the use of bunch of min cost silvers and bronzes or the likes. Im playing since over a year and still have not a single min cost silver. CCing and AWing just eats them all.