The spells I mentioned can also be used at higher levels and you can then quickly checkmate 3-4 opponents and finish them off with critical damage. I played a Paladin 6 / Sorcerer 6 Critlander on one run. This works excellently. There are plenty of ways to increase your spell DC, so it's all worth more than five percent of Champion, but of course only in terms of game mechanics. If there are other reasons (roleplaying) why you take Fighter forget what I said

If you play with a normal group you don't even have to do the following options on your opponent (I can't guarantee the completeness of the list)
- Hold Person
- Sleep (I mean the condition not necessarily the spell)
- Drow Potion
- Glyph of Warding (Sleep)
- Crawler Mucus (Paralyzed Condition)
- Hold Monster
- Ghouls from Danse Macabre
- Wolf Wild Shape (Exposing Bite)
- Killer Sweetheart
- Luck of the Far Realms
And the most important artifact is of course Diadem of Arcane Synergy

But thanks again to you for the nice discussion