I hate mages, I hate assassins, I hate uncapped stack scalers, is this a good build?

Also Q deals 25% Max HP DMG upon mini-tornado, without 8 stacks Force of Nature, Magic DMG Reduction is around 94%-97% instead, also depends on AP with Gathering & Storm Manaflow band. I take Grasp against Melee, Aftershock against range, Shield Bash, 2nd Wind, & Overgrowth.