War atop the Tundra

Fable lifted his head as the explosions rolled closer. A deafening blast followed each one, the noise tearing through the network of fissures and caverns beneath the tundra, reverberating through the Core Chamber with the ferocity of a roaring dragon.

I winced as one particularly loud explosion left a painful ringing in my ears, the sound sharp against my eardrums. My grip on the core tightened, and my tail began to twitch, tracing anxious lines across the fine powdery snow of the chamber floor. I was blind to the world outside the small cave, without the faintest idea who was attacking us, or why. 

My soul was exposed and vulnerable, a brilliant flare to any demonic moths circling about. The gate itself was bait for Enusians; distant enough, it would make rallying any sizable force difficult but big enough it couldn't be ignored. It would have to be one of those two forces, but the question remained: which one?