Just realised that the illusion spells don't work on these mercenaries. I have all the illusion perks as well (apart from the master spell one), forcing me to attack them now. Just the scaling needs sorting, the level of the people does anyway.
Yet another reason why spellmaking never should have been cut.
Now spells dont even work.
On my last character I tried levelling illusion, but the enemies kept outlevelling my spells before I got them.
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I'm not sure how you've both managed to have Illusion spells that don't work. You do realise that dual casting Illusion spells more-than-doubles the max effective level? It's mathematically possible to have the top-level spells hit something like level 95 enemies this way (although obviously there's no enemies above level 50).
My Fury spell (a Novice spell) is capable of hitting level 56+.
Base spell hits level 6.
Kindred Mage perk adds 10 levels. Now hits level 16.
Rage perk adds adds 12 levels. Now hits level 28.
Dual casting "more than doubles" max level - call it double for ease. Now hits level 56.
That's just the Novice spell. The Master spell, Mayhem, hits level 25 single-cast at its base level. With Kindred Mage it hits level 35; with Rage it hits level 47, single-cast, or level 94+ dual-cast...
The annoying thing is finding an enemy that simply resists Illusion spells. I've not yet hit Illusion 90 so haven't got Master of the Mind yet, but at the moment I can't use Fury or Calm on vampires or Dwemer constructs.
To be honest Illusion is ludicrously powerful, I can clear out entire settlements without even readying a weapon.
As for the OP... yeah, that svcks. It only hits level 40 enemies and there's no way of raising the max.