And how do you deal Fire damage to him while he's inside an AMF? With alchemist fire?
Shrink Item + lava. I actually have shrunken lava on a character I'm currently playing, so no I don't think it's unrealistic.
Searing Spell + Orb of Fire spells.
Fixed
Mine doesn't require spending any of the current day's resources, though. I can preshrink a bunch of them on my day off. Then I just pull small rocks out of my handy haversack, and drop them on the guy in the AMF, and they automatically expand into pools of lava. I can carry as many of these things as I want.
I could also have shrunken pools of acid, poison, etc, to deal with other things. I might not know exactly what the guy is immune to, so I could drop all of them just to be sure...
Hmm... now I'm thinking that Quintessence + Psionic Minor Creation (Black Lotus Extract) + Shrink Item sounds like a combo for day off preparations. I should make a Cerebremancer who uses this.