Southern forest 2 chests, Tangled forest 1 chest, Telecore cave 1 unguarded chest, Wooded forest 2 chests, Deep forest 2 chests. Western range 1, Underground river 1, Eastern range 1, these ones will put up a fight. On average they can give you 3-4 tokens every day, maybe 5 or 6 if you go for the mountains.
114g01 Sell some guardians, capture ad train and sell some more and go back to low level areas to curb stomp some chest keeper. Nothing fancy, just some legwork.
I haven't played the sequels yet and maybe such a feature was added, but I think an "esteemed time" when you choose a mission would help. Too many tims I had to quit a mission because I had to go out.
"Battle out of sync with server." Ok, I only had to refresh the page 8 times during a single fight, no big deal. Seriously. I'm about to recommend the FOAD protocol.
I recommend the Qui Gon Jinn method to level up new guardians. Go to a high level area with a high level guardian as your first choice and the newcomer as the second. Find a wild guardian, almost win with the first guardin and then spam harmless abilities till it loses. The newcomer will score the final hit and take all the credit. And experience. Yes, I know most of you probaby do it.
Oh, thank goodness. Two more geniuses have arrived to reveal us the hidden truth; this game is similar to pokemon. Wow. I'm sure nobody else ever had a clue about it.
 "Incursion"){kind=icon}
 "The King's League: Odyssey"){kind=icon}
 "The King's League"){kind=icon}
 "Mystic Guardians"){kind=icon}
 "Protector"){kind=icon}