I will preface by agreeing with Neon that this is probably the weakest tribe of the event and I believe a Rakano deck is a far more powerful aggro build (this one I will run after my leaderboard runs are done).
That being said, this deck unloads 0 cost grenadin and isn't afraid to devour them right away to refuel. Sparkbot at 2 cost can easily replace a lost grenadin drone and serves as a useful counter-aggro unit. Sadistic valkyrie may not see many triggers (aside from devour or other valkyrie) but a 2 cost 3/1 flier isn't bad in this deck. Scraptank at 4 is a real potential beast vs combrei if you can build up the moment of many dead units but might not be enough in this event.