I like the idea of Spike having magic of his own. Given his ability to send and receive messages from Princess Celestia at any given time (whether it's in-born or given to him by Celestia, as some people like to think), it seems perfectly plausible, and fitting for the Element of Magic's assistant and best friend. Love your aged-up Spike design, too! Your drawings have so much character. Each one is like a single page from one of the most detailed, creative stories about the FiM universe that I wish I could read.