Well....its just a tip to get moss, soularoma and dreamgrass faster...
Just kill mobs boss...they have a bigger drop rate...
Here are the coords:
FurySkeleton - 605,289
FearlessBeast - 570,148
DemonLord -122,593
SerpentSpirit - 271,636
FuryApe - 748,1042
HadesLord - 1066,714
DemonBat - 570,489
FiendLord - 463,593