This deck is built around damage effects/loss of life caused by artifacts/ creatures entering and exiting the battlefield or casting non-creature spells.
Creatures
Reckless Fireweaver - The card that inspired the deck. One damage to each opponent when an artifact enters the battlefield. Triggers off artifact lands! Multiple triggers from Coworker's Puzzleknot and Origin Spellbomb!
Disciple of the Vault - Triggers off various spellbombs and clues being sacrificed. Works well with Angelic Purge (sacrifice a 1/1 token, get additional damage as well as exiling a target).
Firebrand Archer - We cast a lot of non-creature spells (22 total in the deck), might as well get extra damage on the opponents for it!
Thraben Inspector - Cheap early creature plus the clue token triggers Fireweavers (when enters) and Disciples (when sacrificed. It also gives us extra card draw and something to do with spare mana.
Artifacts
Coworker's Puzzleknot - A workhorse of a card. Combined with a single Fireweaver, it gives us a 1/1 body and two damage to the opponent for 2 mana (then an extra 1 damage and another 1/1 body after sacrificing it for 1W). If there is a Disciple on the field, there's additional damage. It's not uncommon for a Puzzleknot to hit the opponent for 5+ damage.
Executioner's Capsule - Creature removal plus added damage with our pingers.
Origin Spellbomb - Multiple damage through our pingers, plus a 1/1 body and possible card draw.
Prophetic Prism - Mana fixing with card draw. Bonus: enter the battle field and casting pinger triggers.
Pyrite Spellbomb - 2 damage for creature removal or to finish of a player. Additional damage through pingers. Option for card draw in a pinch.
Instant
Renegade's Getaway - Protection for a pinger with the addition of a 1/1 servo to trigger the pingers
Rally the Peasants - We have a lot of small creatures, Rally gives us a way to sneak in a lot of damage and it can be reused! It also triggers Archers!
Sorcery
Angelic Purge - Problem removal with the added benefit of triggering pingers
Enchantment
Impact Tremors - Extra damage for creatures entering, plus it triggers Archers
Lands
Artifact Lands - Trigger Fireweavers! Free damage on opponent!Duals - give some mana fixing and a little extra life
Sideboard
Castigate - pull out problems from opponents hand (like Rolling Thunder or Capsize in Tron)
Dispeller's Capsule - deal with problem artifacts and enchantments plus trigger our pingers
Electrickery - for any deck running a bunch of small creatures
Journey to Nowhere - Another way to deal with problem creatures, especially black since our capsules can't take care of them
Relic of Progenitus - answer to graveyard manipulation plus extra card draw and pinger triggers
Pyroblast - our counter spell for counter spells
Sunbeam Spellbomb - life gain against aggro with option to use it for card draw. Plus, pinger triggers