And Wild Richochet is ridiculous. Thoughtseize me? I Thoughtseize you, 4 times. Taking an extra turn? I'll take 4 turns instead.

So I looked it over. I see that the concept is goblin tribal, which allows more tokens, and then to conspire ramp and land destruction spells to stay ahead on resources. That's a pretty soild plan. I caution against the tribal. The main emphasis should be exploit tokens, ramp, and land destruction to create card advantage and lock the board state, so going to heavily into the tribal element will distract from this gameplan and give your opponents time to recover/catch up (assuming this is a cutthroat heads up commander. Tribal is way better for multiplayer fun/going under the radar.) With that being said, I would cut some of the cuter tribal creaturse for more efficant token producing instants and sorceries. Things like dragon fodder, krenko's command, hordeling outburst, empty the warrens, one dozen eyes, and beacon of creation not only give you plenty of tokens and a way to recover after your board is wiped, but also can be conspired, which is pure jank. My too cute list is gempalm incinerator, giant adephage, and thunderous wrath. I also think you should cut 2-3 of your x burn spells, because these will not always be auto wins, and when they are you only need one. I would count burn at the stake as an X spell. Bramblecrush is a better creeping mold. Fissure vent and melt terrain don't seem good enough. Card advantage, like magma jet, glimpse of nature, primodial sage, sylvan library. Definitely play tooth and nail, and a few more spicy dudes to search for. Artifact mutation is AWESOME. Here's a list of other suggestions: Gaea's Cradle, the new titania, verdant force, seedborn muse, quest for renewal, vedalken orrery, deus of calamity, Xenagos(always a good alternate general), terrastadon, gutter grime. Mechanics to look at include populate, inspired, convoke, battalion. Also Parrallel Evolution (BOOM!).