I'm having an internal debate, and neither side seems to be making a definitive argument. I hate it when that happens!
When I started writing my novel, I decided to call the process through which a mage comes into his power as Surging. As you can see, I also decided to capitalize it.
I recently got a suggestion that I refer to the source of magic as the Source.
In general, I don't like capitalizing things.
I'm not sure if I should:
1) use Surge and Source
2) use surge and source
3) use Surge and source or even
4) use surge and Source