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In my opinion, it makes no sense to develop Chaos skills for a dwarf. His magic is meant to support troops. And spellpower will be very useful for Resurrection.
I repeat, without magic, the dwarf will move too rarely to inflict serious damage with his fireball!
Level 32 is not mandatory. You just need to prioritize, as I wrote. Magic Resistance is not something you absolutely need to take right away.
Attached is a screenshot of a hero at level 18!
Education will develop something unclear, while healing skills enhance attack and defense. Logistics is a much more useful skill, but there is simply no room for it in this build.
The point is to strengthen the attack and defense of your troops in every possible way. With this build, combined with runes, only dark elves and demons (and maybe orcs) will be able to match our attack – but no one will be able to match our defense, and this advantage in these stats is guaranteed in the final battle.
The Energy Rune is critical because:
Mountain Guards – speed 4
Berserkers – speed 4
Arcata Dragons – speed 5
With the Energy Rune (and tactics!), these units can cross the entire battlefield in one turn.