[X] Plan Parting Shot
I can't wait until I get my own office at work, whenever that is. It'll make not actually doing work so much easier.
So, regarding the vote I missed on whether or not to apply flame to the Floating Tentacle Beast, I don't think I saw anyone mention that Oathkeeper might have been burning more brightly because it was agitated. It could have been reacting to the mental assault on Richard, or perhaps even a mental assault on Oathkeeper itself. It is a sentient, telepathic sword, after all, and it was repeatedly being brought into contact with the Aberration.
If the thing contained particularly flammable gas, there should have been great gouts of flame jetting from the injuries Richard inflicted upon it, though an explosion would have needed proper stoichiometric ratio, so it wouldn't have been instant.