As the subject says, just took a look at the new reflex save on the first tick of acid rain, and heighten does not work with it. This may be intended, but that seems unlikely.
If you are going to add a save for 1 of the 4 ticks, at least let me have the option to boost the save.
Although considering the smallish area and lack of sp efficiency when maximizing/empowering, I ended up just recasting vanilla acid rain with my spell-like abilities. At around 15 sp it kind of follows a logical progression with the 3 earth savant spell-like abilities. However, the constant toggling of maximize and empower got real old, real fast, but maybe that is best for another thread.....
At least earthgrab has seemingly infinite range and shoots through walls.