Issue 17 contains:
The Skeleton Ancestry: Build an adventurer who has come back from the land of the dead and walks the earth as a skeleton with this new ancestry.
Monsters, Reforged!: This new series takes monsters from the basic SRD rules and rebuilds them to be more dynamic and interesting. This issues brings 8 new skeleton themed monsters, including rebuilt bacis skeletons and flameskulls, as well as skeleton support creatures, new deadly lurkers, and a bone giant that can consume other skeletons to heal itself before spawning new lesser skeletons to bolster enemy numbers.
The Circle of the Parasite: A new druid subclass where your wildshape allows you to transform your body, allowing your symbiote to enhance your abilities.