Thank you for this. The Breggle is so simple and perfect, I don't know why I didn't think of it.
I would (will) make the Knight's Oath of Protection a free action, because I would let any character protect another character that way as their action.
They could use some mounted combat boost. Shadowdark doesn't address mounted combat, due to its dungeon focus, but MenhirForest would see it more frequently.