Originally Posted by noblepaladin

Well, it is an artificial intelligence, so from it's perspective, some things make perfect sense (but to the human, it is stupid). Fire attunement has a very long cooldown, so the computer figures that it is probably a good spell to use Glyph of Renewal on. The AI probably is not thinking in terms of maximum damage. It would be very difficult to make an AI be able to know what is a good spell combo and what isn't, because there are too many different skills in the game (unless the programmer codes that Meteor Shower > Rodgarts > Fireball > Healing Breeze..., etc). So it is very likely that the AI just uses the spells based on very simple heuristics (or maybe he doesn't even take anything into account and just casts whatever he can after he happens to use the Glyph).

Personally, I don't think it is a good idea to make a hero nuker simply because it's difficult to have it choose good targets. For long cast time spells, you may see the old Cynn effect where firestorm starts falling after the battle is over (even before the AoE nerf and monsters just stood in AoE, Cynn wasn't very useful because she always targets who you target, and 4 seconds later, that target is dead and firestorm starts falling). I find that Barragers work will if you are in need of AoE because that can be spammed carelessly. The AI choosing a bad target for meteor shower can lose you the battle (your hero does nothing for several seconds and then trieds to meteor shower a moving target, doing no damage at all).

I haven't found a way to make a good nuker Ele nuker yet (or one that is comparable with a human player). However, I have found that hero monks and rangers are decent replacements for human players (often outperforming PuG humans). If anybody has a good Ele build for a hero, I'd love to see it, but until then, I will play the role of the nuker if I need one.