Neat-o! I'm glad you posted this. I've been eyeballing +attack magic potency and +earth magic potency on my Conjurer.

I wanted to share your same initial opinions of:
Same level ~ same mob means same statistics.
Weather not having an effect on spells yet.

side note: Holy Mother of Odin that Thaumaturge damage is high.
P.S. Doh! Water Brand :-(