Magic Empowerment/Magic Enhancement : Users become stronger, faster, more durable, etc. when they come in contact with magic, possibly unlocking abilities related to the affinity and enhancing the existing powers.
I extinguished the fire in my hands and sat there holding the smoke. I wanted to breath it in, it was the closest thing to a cigarette that I had, and as I worried about Phoenix I really needed something to get my mind off things.
Fire or light is a symbol of the holy Eucharist because, it represents God's purifying presence. Another reason it is used is because represents the light of Christ. As Christians are commissioned to keep this light shining through their whole life.