It's Salamangreat. You have 15 1 card combos (1.5 with cynet mining). Terrortop is the only one that doesn't consume a normal summon or require a discard. Everything revolves around Stallio for the good endboards. Promethean Princess does a lot of heavy lifting as a fire version of Transcode Talker AND she's a disrupt. Hitta turns the opponent's Ash blossom into our Ash Blossom and serves as a way to playt through a nib on Stallio. The 1 card ends on 1 trap + Prom + relinked Raging Phoenix. The old Spinny + Gazelle ends on the same thing, but with both traps. There are a few combos that let you play through Nibiru, revolving around Weasel and Gazelle ( ie make Stallio without burning your normal, but Nibiru is a problem for this deck that must be respected).
Charge enables you to recycle and revive to keep your resources topped up and it bypasses banishing effects like Called by the Grave, D.D. Crow , and the Melodious fusion. The only boon compared to Will is that a) you need 3 fires that are banished or in grave to activate the revival effect and b) the monster that is summoned is negated and can't attack. If you are running the ftk version of the deck, will is required, otherwise Charge serves as an extender or a dsiruption if your opponent doesn't Nib you.
Regular phoenix is solid now that Code of Soul exists. You can loop it with Jack Jaguar to wipe on your turn and have a wipe for your opponent's turn. fire. Horseprince enables you to tutor out Code of Soul and sets up the quick effect reincarnation link of Pyro Phoenix. You can also preseve Stallio and use Horse Prince to tutor out ash and bounce it with Stallio. .
Handtraps and Side Deck choices is whatever is relevant. Think of it as having 15 free slots in main and 15 free slots in side for a total of *checks calculator* 33 free slots. The better part is that this can go first and second. *glares at Tenpai*