First rule: it has to be good xp ( not lousy not extreme), must be done solo or with parterner/alt charcter , no huge cost aka no huge amounts of bread to used till next fight , it MUST be fast, pay good (drops or money or both) and use wisdom items.
Second rule: Group lvling fights.Xtreme xp, good/rare drops (money .. it depends) , no bread using ,full wisodm set but not at all fast.
Third rule : lvl of mob a bit higher than lvl of group attacking.
Now from lvl 20 till higher lvls the basics are solo trees/scaras then group fights on them , milis&wabbits seems to pay good xp(never tried them ) ,solo boowolf , then bakers/minners , funjis, groups of boos
and after that the new monsters on the gay panda island ffs gay.
Also good groups of gobbals give nice xp on 20-30 lvl.Thats all pretty much fuck they removed crackler mobaround -3,2 now cci is fucked damn fuck ffs