I recently got my hands on this material and poured over it several times. It is a fantastic class with supporting archetypes, feats, and equipment.
The class itself, the Battle Scion, is a hybrid class in the same vein as the paladin and ranger, but the class focuses on arcane casting. The signature ability of the class is its force blast, which starts as basically a 2d4 magic missile and increases to 8d4. I was a bit underwhelmed by the damage at first, but it is an automatic force damage application. The class ends up getting access to fighter feats, abilities that improved the use of its spells and spell like mechanics, and caps with the character having an effective fighter and wizard level of 17.
The two archetypes that are presented focus around increasing the power and versatility of the force blast (the Force Blaster), or a much improved upon arcane bonded weapon (the Bonded Scion). Both add a very interesting twist to the base class and allow the character to focus on a role more in line with a blaster or melee powerhouse, respectively.
The feats section adds some interesting options for specializing in certain aspects of the class, and while they don't seem too overtly powerful, they certainly help refine the potential of this powerful class. The legendary weapons and armor of the Battle Scion are very flavorful and scale in power with level progression, adding just that more to what could be an epic player experience.
Overall, I thoroughly enjoyed the read, and the way the class is put together, but must warn potential players and DMs that this class may be a bit powerful in the grand scene of gameplay with other core and base classes. But don't let that scare you! I highly recommend giving it a try! Great job Kobold Press and Marc Radle!
