Dave, Fist of Odin
I use my Clobbering proficiency to assist Marivohn, as well. BR: 18, which hits AC 0. Mostly what I'm doing is aiding Marivohn's action, but if you want a damage roll: BR 3, for 5 points damage. I suppose one way or another that's moot, though.
Then from outside the chapel I cast Spiritual Hammer, which acts as a magic weapon to hit. I mean, I know YOU know that, Rob, I'm just making sure that BROGG knows that. Don't we have some sort of magic sword in the party?
We definitely should have had shotguns for this gig.
Hey - if this doesn't work, let's go back to that hallway and rest up. Magic Stones for everyone!