Doesn't look too narrow. Plays a lot like a regular red aggro deck. Key looks pretty slow and Pyro looks pretty high powered. I'd slant it to be a bit more aggressive and it'll be a fine red aggro deck with a unique angle to it, which I think is perfect. A kind of generic concept (red aggro) with a way to feel less generic will make the deck mash together more easily while still being interesting to play.
I like the idea of a Phoenix in there. Maybe the Ferocious one. The damage one mostly wants you to be more red, but the Ferocious one kind of wants your pair to be green or black.
I like the idea of a Phoenix in there. Maybe the Ferocious one. The damage one mostly wants you to be more red, but the Ferocious one kind of wants your pair to be green or black.