What's wrong with this battle?

[Graeme Dice]

magnate said:
Mirror Image potentially absorbs up to 4 hits, though I'm unconvinced by this - anyone want to argue in its favour?

Mirror image potentially absorbs dozens of hits, since they only dissappear when the real unit is hit, and you can have 10 or more images with a high enough air magic.

(Would you use it over Quickness, Personal Luck, Ironskin, Astral Weapon or Cold Resistance?)

I'd defintely use it instead of cold resistance. Breath of winter isn't going to cause you significant damage with reasonable protection.

Astral Shield is defeated by an MR check, so is pointless against SCs with MR in the 20s.

It's still going to succeed 1/20 times for MR 18, and 1/100 times for MR in the 20's. That's about one paralysis per battle.