Unupped speedbow?
Alright, there's balance between damage and control/protection that you'll have to make. The less control and protection you have, the faster your deck will be. However, running pure speed risks being hard countered by a single card many times.
For now, I'd remove the enchant artifact. If you want to keep the earth usage roughly higher than just the graboids, then replace it with an iridium warden. It synergizes with blessing and momentumn quite nicely. The lycanthropes and arsenic are perfectly fine- keep them, as they're valuable in adding damage, which adds speed. I recommend replacing one of your two defensive water cards for something that deals more damage.