Before the holidays, Countercheck and I decided to do a short series of one page dungeons. We just put the final touches to our first one, Stellarium of the Vinteralf.
Like most one-page dungeons, it’s system neutral, but I do most of my Torchbearer planning in a system neutral way anyways. Consider using Gnoll stats for Price Thavir and his merry Vinteralf, and Black Dragon stats for the Wyrm Jokun. To interpret timelines like ‘d4 hours’, you’ll need to pay attention to the fiction of your game (alternately, you could just pick something like 6 turns, or one camp phase).