A goblin in fact

I run something nearly identical. Here are a few suggestions:
1) Accorder's shields are too slow. Replace with panic spellbombs. You can use the secondary ability even if you sac them to rebirth.
2) Arsonists are a bad choice in the one-drop department. Replace with something more useful like spikeshot elders.
3) You don't need the flings and the 3 automatons (at least not 3 of them..). Replace with signal pests. Much faster and more useful for battlecry or wardrivers since they also have battlecry and are 2/2's. I personally run 2 automatons and they're almost always enough.
4) I haven't pulled any increasing vengeances but they seem like a good choice so I'd playtest a bit.
5) The land craziness is completely unnecessary. Run 20 mountains and save yourself some time and money. It might seem like a good idea but your better off pumping mana into spikeshots for removal. If you really want to splash go for Dragonskull summits and throw in a copy or two of gravepurge or just throw in 2 or so buried ruins to retrieve what you sac to rebirth.
6) Lastly, invest in a single biggie or two. I would say depending on what you're up against an inferno titan, Balefire Dragon, Moonveil Dragon, Urabrask the Hidden or Chancellor of the Forge could be of great use.

Conceptually, you need to understand that if you have enough mana in the right combination to use that wolf's run, you've already lost (all your creatures are 3 mana or less and buffing them one at a time doesn't do a damn thing for you). Goblin decks are fast aggressive decks that need to get the opponent down to 10 or 15 asap and then use Brimstones and grenades to win.