Got a quick check, just in case you want to review the models:
The right arm has a keyframe glitch during the Spell Throw and Spell.
The weapon starts sinking into the ground in Death when shouldn't do it until Decay Flesh starts, and also it's sinking in hero models before Dissipate.
One missing detail in the ancient skins:
Missing the shaft end, not that visible though:
I know the animation is kinda cartoonish and should be it but in the close portrait camera angle (Ancient Hero) it's quite visible that the teeth are glitching, he's oddly chewing them:
Hope this is useful.
Regards!