Fanatic of Mogis - Mono Red Devotion (Standard)

This is currently the most consistent deck I have, and I really enjoy playing it. The deck is built around the idea of quickly doing damage (an aggro red deck is unheard of, I know) while also building devotion to cause some serious hurt with Fanatic of Mogis's enter the battlefield effect. It's not uncommon for the Fanatic to come out and immediately deal 5-7 damage to the opponent, and has hit for as much as 10 due to a very favorable board state.

Building devotion is fairly easy in most games as you can throw out a bunch of cheap creatures and cheap auras. Swiftspears and Crusaders allows for a consistent board presence, and auras like Hammerhand and Dragon Cloak provide good overall utility for a very low cost.

Purphoros, God of the Forge can add indirect burn as well, though I rarely seem to play him simply because he's a one-of that I rarely draw. If Purphoros shows his face, he almost always has the devotion required to become a creature, and that's rarely a good thing for the opponent.

Dragon Mantle of just about anything is a lot of fun. Early in the game, it provides useful card draw and will trigger Prowess on the Swiftspear and Heroic on the Crusader. If you have mana to spare, feel free to pump a creature's power up to wreak even more havoc. If you manage to get a Dragon Cloak on a Stormbreath Dragon or Prophetic Flamespeaker, things can quickly get out of hand for the opponent.

Mardu Scout is one of my favorite new cards from FRF, and he immediately replaced Borderland Marauder in the deck. At the 2-drop spot, he provides more devotion than Marauder and can Dash in Turn 2 to typically lower an opponent's life total to 15 (Turn 1: Swiftspear, Turn 2: Swiftspear + Scout). He's also a better blocker than Marauder, although you likely won't be blocking too often with this deck.

I tried Dragonrage from FRF, but found its cost too prohibitive to be beneficial, though I do like Temur Battle Rage quite a bit, so it came in and replaced 1 Hammerhand and 1 Dragon Cloak, though you could just as easily put those back into the mainboard.

As for the sideboard, it's silly and you should mainly ignore it. The biggest problems I'll run into are board wipes (shocking, no doubt) and big creatures going over the top. As for board wipes, there's not a lot I can do except pray that they don't happen. Sideboarding for burn - which you can do an awful lot more than I have here - can be a useful tactic. If creatures do end up trying to go over the top, or a flying creature becomes an issue, you could either run burn or Harness by Force to simply annoy your opponent.