need help with the damage formula and skills.

Well, just gonna say Elemental Amplification does not affect damage range.

This is correct for all mage classes. But, of note, Evan's Dragon Fury does show in the damage range. Unfortunately, it doesn't seem to work quite right. When I calculate my damage unbuffed damage range, I hit the numbers perfectly (Fury off). However, when I have Fury on, my visible damage range is a bit less than what it should be. It's only about 150 points less, but it's different nonetheless. It's supposed to be a 35% damage increase. My visible damage range calcs to be about 134.46% of the unbuffed range. Strange.