Spell questions Options

[Shadan]

Some questions about spells:

1. Which epic spell is better Dragonr's Breath or Comet in IA? DB does more damage and knockback, but Comet can stun. Pls. consider only the hardest battles (EDE, Oazis, Twisted Rune, final SoA fight etc.) since both are very good against weaker enemies. I am curious what do you think, guys.

2. Is Imprisonment really so good spell in IA, or just my Baldurash text upgrade is not good again. It says no saving throw and bypass magic resistance. Is it right? If yes, this would be among the best lvl 9 spells, since you can take out 1 dangerous enemy from the fight with this. OK, you need a freedom also when all enemies dead, to free imprisoned one and kill him.

3. Why Shadow Door is better than Impr. Invis.? As far as I see, Impr. Inv. is a little bit longer and gives some bonuses (4 AC and 4 saves), Shadow Door doesn't have bonuses. So why is Shadow Door lvl 5 spell while the better spell is lvl 4 only?