Strong/Staples:

Greasewrench Goblin (U): No downside and I like the upside versus Embereth Veteran (which is the only 2/1 for 1-mana with no downside we have access to). Has great synergy with the other 1-drop, Marauding Mako.

Interest:

Marauding Mako (U): A much better version of Flameblade Adept, especially since it can likely attack as a 2/2 on Turn 2 (and has some explosive starts with things like Faithless Looting. It doesn’t fuel itself, but so many strong Red archetypes rely on discarding.

Similar:

Dracosaur Auxiliary (U): I like Amethyst Dragon slightly more as Volcanic Dragon+, but this does have situational upside.

Unique/Synergy:

Fuel the Flames (U): I think Vampire’s Vengeance is slightly better, giving you both “cycling” and the damage as opposed to either. And Pyroclasm is a mana cheaper. But this is exactly the kind of card that benefits from cycling.

Thunderhead Gunner (C): I think this could be sneakily decent. It’s somewhat vanilla, but it also gets to activate the turn you play it and then it likely guarantees you don’t hit lands unless you want to.

No Interest:

Adrenaline Jockey (U): I prefer the very similar, higher-floor, Scytheclaw Raptor.

[{Burner Rocket]] (C): Hidden Footblade offers a trick that is more likely to 2-for-1 an opponent, whereas this has the potential to push more damage. But in those situations, I think I’d rather have Mirran Banesplitter.

Clamorous Ironclad (C): I think Oliphaunt is significantly better.

Crash and Burn (C): Unless 6 damage is necessary, 5 damage costs 3-mana.

Dynamite Diver (C): More upside on Heartfire Hero.

Endrider Catalyzer (C): I’m having trouble envisioning a deck that wants a 2-mana 3/1 and a mana dork on Turn 5.

Endrider Spikespitter (U): An actual payoff for getting speed, but a 3/4 reach for 4-mana that doesn’t get you card advantage until turn 7 at the earliest isn’t good enough on its own.

Gastal Blockbuster (C): A bigger/worse Shrapnel Slinger.

Gilded Ghoda (C): Isn’t Piggy Bank better in most cases?

Goblin Surveyor (C): Just not enough meat on the bone.

Kickoff Celebrations (C): Unless you can easily reach max speed, it’s a worse Bitter Reunion.

Magmakin Artillerist (C): Comparing this to a Guttersnipe or Thermo-Alchemist, I think this is harder to trigger and doesn’t do enough damage.

Outpace Oblivion (U): I’d rather have Ghostfire Slice.

Pacesetter Paragon (U): Too-far below rate compared to something like Scrapper Champion.

Pedal to the Metal (C): Strictly worse Lunar Frenzy.

Prowcatcher Specialist (C): We’ve got better 2-mana haste threats in Cunning Coyote, Resilient Roadrunner, and (now) Ash Zealot.

Push the Limits (U): Huge effect that is far too narrow in almost every cube.

Reckless Velocitaur (U): The floor is terrible and the ceiling is not great.

Road Rage (U): Galvanic Discharge’s floor is likely this card’s ceiling.

Skycrash (U): Scrap has been powercrept and it’s still not great. Shredded Sails offers similar modality with more upside.

Spire Mechcycle (U): Needs another Mount/Vehicle to even be comparable to Charging Monstrosaur, which has a much higher floor.

Tyrox, Saurid Tyrant (U): Maybe in a tempo deck, but 1 toughness means this doesn’t survive anything a 3/1 doesn’t.