sorry people, the EASY way is to get the force drain
click ten times, use force drain on the mass of invisible monsters, and you will find your force gage completely full.
the best part is that all you need is knight version of force drain, as long as you aim among dozens of dragons...you don't need to invest in master force drain.
important note: do NOT use force storm before draining a bunch of monsters...drain them first then blast them.
