Discussion about the INFERNO faction – Demons and Devils.

Another point: to prevent enemy units (especially Elven ones) from moving too quickly, you can (and should) upgrade the "Sharp Mind" skill. Fortunately, a Demon only needs scouting for this. And that's it. Cast "Mass Slow" and I wouldn't want to be on the receiving end!

But what about the high Elven resistance? Unique units, magic resistance from luck, and bots focused on resistance. If you take "Battle Uprising," the Inferno units will move before the Unique units. This is just to avoid arguments, like "the Unique units won't just stand there and immediately rush into the enemy group."
In short, you can effectively avoid spellcasting.
And in general, to win against the Elves, you need to somehow exert initiative and build up defense in some areas (I'm not just talking about the ability, but also about stats), and it would be good to get better upgrades to have more time to use "Berserk," "Inspire," etc.
In short, focus on magic and good defense. If you manage to get initiative, then you can confidently attack.