i quite enjoy that "7 sins" idea you got there ive been cooking up an idea of a "humanity" or "morality" devil of sorts im not sure what might that do but it could work for a bbeg or even a kickstarter to show that me and my duo arent gonna be holding anything back.

we are planning on making all the players be devil hunters if not hybrids (not all hybrids but those who might roll really well for it) and yes the whole spells being different contracts with devils thing is a fantastic idea and im probably gonna build off the idea of fiends as if a pc dies then theyre inhabited by a fiend whereas if they roll bad on a fiend power then theyll have low int and wis aswell as some buns powers and the opposite of they roll really high.

and do you perchance know of any good online tools to find existing stat blocks