Master leveling is very much similar to normal leveling, focus on being able to stay in Ferea in any spots (ideally a double spot).

Ferea provides the best XP for convenience, you dont have to move anywhere! Just go back to server selection, master reset, log back in again and keep leveling.

Dont forget about your buffs! With all of them active at once, you should be able to net 1 reset every 30 minutes or so!