How to develop through the skill wheel on the path to the ultimate ability

I already wrote, in my opinion, it’s a great ability for those who appreciate aesthetics. It’s difficult to upgrade, and you can use it rarely. IMHO, it’s needed in a long campaign where, for example, you need to complete missions without castles at the end. So, we’re waiting for an add-on with a super campaign from the developers. You upgrade Necromancy, Dark Magic, Power, Logistics, Leadership, and Education, and I won’t be defeated.