Credit to @Eika
List of troops per Arcane stone(+Mythics/Classes)
PLAINS - Yellow/Purple(116) - Divinion Fields
Atlanta 12
Banshee 2
Faunessa 12
Green Seer 12
Hellcat 12
Jackelope 2
Infernal King(L) 16
Herdmaster 3
Ice Witch 12
Nymph 2
Sacrificial Priest 3
Shadow Dragon(L) 16
Tassarion 12
IK is the obvious one to finish first - after that it is much more based on what teams you want to use and also what Kingdoms you are trying to 3/5 Star