I recently ran The Portal Prison adventure from the Game Master's Book of Random Encounters. The middle of this short adventure has five random encounters rolled up entirely from contents found elsewhere in the book.

Here are some of the maps recreated using Inkarnate, which we used as battle maps in the mighty Owlbear Rodeo.

• Town Graveyard
• The Portal Prison
• The Portal Prison, ruined
• The Portal Prison, control room