Welcome to Elsier.
A world of high adventure in the midst of a dramatic rise in arcane magic. Ever since The Great Descent when the gods crashed to the mortal plane, Elsier has been changing. Creatures not known outside of old fairy tales have been seen wandering the world, areas of the land barren for generations have turned verdant and perhaps more importantly, races which were always thought to be magically inert have started to show signs of being able to manipulate magic.
Start with the campaign guide.
The free Basic Rules for Dungeons and Dragons 5th edition are available here.