Pretty standard budget-ish Mono-Red deck with some twists. One of them being Ire Shaman which isnt the fastest red creature but hes great against early Sylvan Caryatid and other annoying blockers. It is also great in late game with its megamorph ability. If it werent for budget constrains I would play Eidolon of the Great Revel. The second twist is Hall of Triumph that sees a lot of play lately. I decided to play two pieces to have more edge since the deck is missing both Eidolons and Atarka's Command.
Let me collaborate on the sideboard a little bit:
Outpost Siege Perfect against Controls, mostly UB, Esper or Sultai. I also side one against mirrors. This card is also a reason to have one more mountain in the sideboard.
Harness by Force It helped me win few games with borrowed Siege Rhino or Dragonlord Atarka. Not terribly important but it can be a gamechanger in some matches.
Magmatic Chasm This card makes Mono-Green Aggros furious, also great against mono-blue with merfolks. Two pieces is a must, especially with all those decks built around Collected Company
Roast It helps getting rid of Rhinos, courser of cruphix and other big ground creatures. You have to play at least 3 of them.
Scouring Sands The best card you can play against mirrors or Jeskai Tokens. Sweeps tokens out, makes you scry and your opponent cry.
Searing Blood Again, perfect card against mirrors and anything with little critters including Heroic. I play 4 of them because I skipped Arc Lightning which has proven to be less effective than Scouring Sands