Thx all of you guys!
Fantastic support.
Well a couple of replyes from my side:
Skratti frost brand; may be is it worthful to replace them with Elf bane? I did that to fight a huge fire snake force Man was throwing to me. Agartha blinded sacred are also magical beings.
Thx also for the info: breath of winter --> useless vs Undead.
Than thx to Chrispedersen, it's a very logic tactic and a very apreciated feedback to me: I am not mind-oriented to this approach, I am always thinking on how to attack and not a lot on how to defend. Your suggestion is very good to me because works the opposite, a sort of attack just to defend youself, end to prepare "YOUR" attack.
A clarification please: what's the "Executor" you mentioned?