More for consideration
Grim Lavamancer--I'm concerned that his effect isn't enough while also being a 1/1 body. I'm also concerned about having to tap him down to get the effect, because there will be times I'll want to do both attacking and use the effect pre-combat.
Beetleback Chief--I don't know that I want to keep adding more cards to my 4-CMC slot due to needing to land Marton on that turn. That combined with the rest of the competition for that spot--Cyclops Gladiator, Ember Swallower, Hellrider, Hound of Griselbrand, and Ogre Battledriver--I'm not seeing that he's particularly better.
Torchling--This might be an interesting choice instead of
Fire Servant. I haven't seen the Servant do me much good, unfortunately.
Capricious Efreet--Tyrant of Discord does this a lot better, in my opinion. I could be wrong though.
Rustmouth Ogre--I don't think the mana cost is worth the effect in this case.
Increasing Vengeance--Fork, Reverberate, and Reiterate are already on the list, so I'm trying to see the benefit for adding another of these effects.
Wild Ricochet--This is a really solid card, but the lower mana cost of the above three is why they made the cut and this didn't.
Incendiary Command--I'm really stuck on whether I really want the various choices on this card. They're sorta good...kinda...I kinda wish the last ability was a
Windfall effect, but there's a fairly good reason why it isn't.
Koth of the Hammer--I'm seeing about trying to find one of the new Sarkhans to put here. Unfortunately, I don't really own an extra Koth so I'm going to have to buy one or the other.
And with your lack of artifacts,
shatterstorm, as well as other removal
Icefall, or
Into the core--I had all of these pulled out at one time or another when I was building this deck. I am a little light on artifact removal, but I'm still considering what to take out.
See above for comments. Thanks for the suggestions.