No problem, you aren't the first today.
Creatures - 8 4 Sage of Epityr - $1 4 Renouned Weaponsmith - $2 4 Simian Spirit Guide - $12
Artifacts - 8 4 Krark's Thumb - $4 4 Spellweaver Helix - $2
Spells - 24 4 Fiery Gambit - $2 4 Lava Spike - $10 4 Serum Visions - $36 4 Spiraling Embers - $1 2 Swan Song - $2 2 Pact of Negation - $22 4 Gitaxian Probe - $12
Land - 16
4 Forbidden Orchard - $24 4 Sulfur Falls - $32 1 Boseiju, Who Shelters All - $10 3 Island 4 Mountain
Total:~173
Sideboard: 3 Shattering Spree 2 Pact of Negation 2 Swan Song 2 Spellskite 4 Dismember 2 Blood Moon
Land: About that 19.... You should never need more than 3 in play. Frankly, I think I'm running too many, but 19 gives us roughly 3 in 10 cards, which is what we want for a land drop every turn without casting our cantrips. * Forbidden Orchard: Any color and guarantees a creature to target with feiry gambit. I love this card. * Sulfur Falls: I chose it because this deck doesn't have a lot of ways to prevent damage taken and absolutely no way to gain life. If the game lasts more than 4 turns, you'll need every point you can get. * Boseiju, Who Shelters All: only 1 because this deck needs as much colored mana as it can. I'd rather never have it early game than have multiples, even "late" game. * 7 Basics to make Sulfur Falls viable
Sideboard: Incredibly flexible.
* Swan song can be boarded out for more pacts of negation against big creature decks.
* Dismember can be brought in for counter spells against affinity matchups.
* Shattering spree can be brought in for weaponsmiths against affinity matchups.
* Bring in more counterspells against any kind of blue control.
* Bloodmoon helps beat Tron decks or anything that relies heavily on nonbasics and barely hurts us at all.
* Pod isn't a problem anymore
* Lose the weaponsmiths for swans and dismembers to make that $200 Tarmogoyf a bird.
* Spellskite is nice if you can't seem to keep the thumb alive. Maybe redirect your own fiery gambit to this creature to make sure the spell resolves.