Card Choices

Main Board

Creatures

Fanatical Firebrand : One-drop Hasty Goblin that can ping away dorks or annoying planeswalkers, or get through some final damage.

Foundry Street Denizen : Here as another One-drop goblin that can whack himself. Up for replacement for another decent One-drop. 

Goblin Instigator : Makes 2 1/1 dinguses like Dragon fodder, but 1 is non-token, which can be important. 

Goblin Piledriver : can get big quick, and with Cavalcade of Calamity out, the cavalcade triggers happen at the same time as the Piledriver triggers. this can be stacked correctly go achive an extra ping as well as a big swing. 

Goblin Rabblemaster : Same as above, but makes 1/1 dinguses, and grows a bit less rapidly. Up for debate. 

Legion Loyalist : Easily the best, if not second best One-drop in the deck. Haste, gives trample and first strike to our attacking creatures. He can make wins come out of nowhere, especially with a Goblin Piledriver out. 

Reckless Bushwhacker : Our one true whack. put down a bunch of one-drops or tokens, then for 2 mana make them swing for 2/1 

Torbran, Thane of Red Fell : basically makes our 1/1 dinguses 3/1's also, Cavalcade of Calamity triggers for each attacking creature, meaning each damage is separate with torbran, thats 3 damage PER attacking creature. Wack. 

Instants

Shock : instant speed nope removal or face damage when just a little behind. an even better Lightning Bolt with Torbran, Thane of Red Fell out. 

Stoke the Flames : gets rid of most any early creatures in the game, and can be convoked with freshly made dinguses if short on mana. 

Sorceries

Dragon Fodder : makes 2 1/1 dinguses. Simple and Efficient. 

Light Up the Stage : Our source of card draw. we regularly dump our hand. drawing one of these mean we pay for its spectacle cost to essentially draw 2 more cards until the end of next turn. 

Lands

Castle Embereth : our pseudo-whack. Great to do at instant speed to a bad block, and after Cavalcade of Calamity triggers.

Mountain : 5/7 best land, should ban. 

Enchantments

Cavalcade of Calamity : great if we gets sucked into the mid game. This means our 1/1 dinguses which we are stuck with, and withno whack in hand or on board, and/or those that cannot get throguh tough blocks, can get some damage through. 

Side Board

Abrade : Artiface hate with a chance to burn. 

Experimental Frenzy : Great against control to help us refill our "hand" 

Goblin Chainwhirler : Great against a mirror-match and ramp decks to clear out the dorks. 

Kari Zev's Expertise : Great against stompy/devotion decks. steal the big thing they made (like a ballista that doesnt have quite enough power to ping you down)

Pithing Needle : No More planeswalkers. 

Tibalt, Rakish Instigator : No More Lifegain, the antithesis of our deck. 

Tormod's Crypt : Those things that are dead, they should stay REALLY dead. 

Under Consideration

Main Board

Burning-Tree Emissary : great with a whack in hand, and multiple of them. However, a rare draw. Plus, doesn't trigger Cavalcade of Calamity . nothing against running this card, just not what this deck aims to do. 

Side Board

Crumble to Dust : If Field of the Dead is in your meta, this is a great choice against devotion (Nykthos, Shrine to Nyx), and Field of the Dead ramp decks. In mine, there are none currently, but would run 2 over 1 Kari Zev's Expertise and 1 Goblin Chainwhirler if there were.