[@Reflection] So the whole concept of spirit powers is just that one thing that tips the scale in a normal fight. It could, if you want, be this big flashy final move that would in all reality end the world if you took logic into account. It deals massive damage, but usually one time use for day/combat/cooldown. Or it could be a more passive thing like "The Golden Rule" (which I love by the way). Or even a counter that punishes specific conditions. "Foolish fool, you've activated my trap card!" 

I'll be sure to give examples to everything and be more specific, though hopefully that made it a bit more clearer.