Just grabbed it and had a skim through - plenty of possibilities there, thanks.
Also grabbed Action Careers out of curiosity, and I think some of the stuff in here could work as well. Might find a way to use these mutations as a way to represent the characters having mastered their Gift*. Not...
If you're wondering, the setting in question is the result of having watched Into the Badlands and Thunderbolt Fantasy around the same time as playing through Assassin's Creed Syndicate and then initially trying to make it for the Cypher System before realising that it doesn't have enough...