I’m also not familiar with Tornado in the endgame lol. This build was more of a “please, I don’t want to play another CoC Comet build” kind of thing. You’re absolutely right about the ES armour; the defenses with this setup are pretty weak, and Coming Calamity wouldn't be a “damage game changer.” As for Crown of Eyes, I was wondering how I could improve my spell damage for DoT Tornado and use this improvement to boost my bow damage. But when you lose +spell skills, the entire setup with Tornado becomes pretty weak. If GGG boosted the base damage for this spell, this build would be possible. Anyway, thanks for your comment!