Okay, PEP TALK! We're fighting an angry caster 7 levels higher than us. It is at approx. 75% health and at full spell capacity. Our first bruiser (The Construct) is at 66% health. We will have to hit fast and hard and have Joseph focus on keeping us at a firmer consistency than strawberry jelly. It won't be easy.
We need to make sure our opponent doesn't have time to buff. With one or two spells he can probably get his AC high enough we can't hit (or can't hit in often enough to posses a threat) (it can reach AC 29 / 31 vs. the good, using 2 spells, none above 2nd level).
On the plus side it only outsmarts most of us, and it's innate magic circle against good only affects four of us (me, rad, solara, and Venn).
However, we outnumber it almost 20 to 1, with almost half our side listed as expendable (non-critical Npc's, my summoned blob of ectoplasm).
Not all encounters have to be won with force of arms/spells
This encounter is with a lying unicorn rapist.
Oh? I have two words: Shivering Touch.
18 Dex, example spells prepared has both lesser and normal restoration, and you
need spectral hand to deliver it safely. It can reach 18 touch AC with relative ease, which will cause problems for your +5 to hit it. Also, it has spellcraft, which will paint
you a an important target. And on average it will drop you to about
-2 hp in the first turn of attacks. And it has SR 20 (you have CL 5). Don't get too smug. To quote avatar "Don't shoot you'll piss him off!"