BOOMSDAY

Praxis Firebomb Aggro.

Main

Light the Fuse, Flamebelcher - Worst cards in this deck maybe.
Lumen Reclaimer - Shuffle oppornent's deck after Flamebelcher. Also good against Haunting Scream, or Mill decks.

Teacher of Humility - Best card in Aggro, also synergize with Destiny.
Calderan Gunsmith - Trigger Infiltrates and deal some damage to opponent's face. I think it's better than Iceberg Scattershot, because I can draw it anytime.
Amaran Stinger - 2 atk Charge isn't so bad. There are some conflicts with Lumen Reclaimer, so can be change.
Auralian Merchant - Ixtun Merchant is better about P/T, but I think Time Markets are good, especially Lumen Reclaimer. I'll test both.
Sandstorm Titan - OP

Torch, Purify, Longbarrel - Removals for Infiltrate. Longbarrel helps aggressive play, but I'm looking for better one.
Obliterate - Hard removal and deals much damage. Burn opponent's face and pray to draw Firebombs.
Cauldron Cookbook - Really good card draw, and, makes Firebombs every turn.


Market

Thundering Kerasaur - Synergize with Destiny in long game.
Twilight Hunt - Compared with Xenan Initiation, Nightfall helps opponent draw Firebombs.