Skills for an Inferno hero.

Luck with wide gates, Leadership with the gatekeeper, Attack with battle frenzy, Logistics with the gatekeeper, and Dark Magic with all the summons – this is an unbeatable build for a demon. Chaos Magic will only be good on small maps, and even then, not always. When fighting against superior enemy forces, only Dark Magic is effective, no other options. And if you're also lucky with the Call of Urgash, you can wipe out everyone without any losses. Ballistics is a useless skill for a demon on large maps. Even if it's a Deleb. It might hit a stack a couple of times, but then a smart opponent will destroy it, and the entire skill slot goes to waste. Against legionary armies, ballistics and chaos magic are a pointless waste of time and effort. Defense is also useless for demons. If the enemy attacks, there will be significant losses anyway, no matter what. It's much more effective to simply prevent the enemy from attacking.