Feel free to take it and incorporate it into any game where it fits.
I would tend to use it in games with simpler mechanisms, where it's just "If you can justify how your coldbloodedness helps Lizard Amelia escape from danger, then you get a bonus die" or something like that. Because then every statement could be relevant, in the right contexts, without additional rules overhead.
But I could see working this into a game with more concrete, spelled out powers as well. (Nobilis 3rd edition tried something similar, with an inspirational phase of character creation and then a more concrete mechanical phase, but it wasn't really successful.)