Resonance

Resonance is the ability to use magic in a better way than your opponent because of your connection to the living

Harmonist is a savant of resonance (Lobos Zuul, Varn, Azriel).
Stagnation negates resonance

Resonant Adaptation - if you have strong resonance and walk into someplace you can understand it. i.e. A harmonist pyromancer went to khugami’s domain they would gain ice powers.