The math in D&D 5e is pretty solid with a few rough spots, and most of your skill rolls should be DC 13. That's a great starting point...

Although many adventurers find their fortune in dungeons and strange wildernesses, the cityscape provides another landscape for them to...

Hear ye, hear ye! There's an adventure before you! Villains and foes and terrible troubles await. The kingdom calls to you for aid! If...