One of my MCs gained powers from having the wolf spirit within him. Even though his ancestors were First Nation natives from Canada and had worshipped many animal deities including the wolf, rather than inheriting this wolf spirit from family bloodline, he got the wolf spirit in him by chance. He got it randomly in him that is now part of his gene pool like a mutation he now carries and he never knew about it which is why he was chosen for this military project experiment. Is this plausible enough? Can this make sense?