[akio950]

[mm1 -> fb1 -> mm1 -> lb(any) -> mm1 -> ib(any) -> mm1 -> fb1 -> mm1]

Is probably the longest non-gap string you can do currently without any empowers. When you get to lvl 20 and add magic burst you can do:

[mm1 -> fb1 -> mm1 -> lb-or-ib(any) -> mm1 -> burst --> back to start]

If you want to save sp without dropping rate of fire/damage you can throw a few points into firebolt cooldown which lets you change the looping chain to:

[mm1 -> fb1 -> mm1 -> lb-or-ib(any) -> mm1 -> fb1 -> mm1 -> burst -> back to start]

So that you can throw 7 cheap shots before having to go to an expensive spell without any gaps.

I still like saving sp more