I prefer Degeneration because the armor actually ends up multiplying my damage output by a ton. As for Incinerate, I did use the Wind of the North or whatever it's called. It's the one that slows your target and does extra damage. Not sure what it was called. It was decent. I may try replacing Incinerate with a different spell though as Incinerate only is useful on target death and if it's a tree, that may not happen. I can only kill trees if there are other mobs nearby as I can target them and use Incinerate's insane damage to kill the trees.