I've really getting somewhere great and unique with my Purphoros deck.
It used to lose like all the time, but I observed other red decks and other stuff and over time used wildcards and lucked into cards enough to build it up to where I want it.
I have seen no one else playing Purphoros as their commander, but learning how to use him has been interesting and I think he is under estimated.
Early on a kept making the mistake of often refusing to cast him until he had enough devotion to be a creature, I under estimated how valuable his hasting ability is even when he isn't a creature. Plus playing Embercleave when Purphoros is at devotion 3, turning him into a creature and giving him Embercleave is very satisfying.
I still lose some times, but its alot less often, I mean alot less usablely to a mill deck or certain white deck.
Most satisfying win was against some of how had piles of Scute Swarm, I used Dreamshaper to trade Omen of the Forge for Seige Dragon, which made Purphoros a creature, the Seige Dragon was hasted and it just slaughters like over 16 scute swarms and maybe a couple of other creatures.
Its a really fun deck and its made MtG alot more fun and its unique as far as I can tell.
Blue Mills and Counter spells hurt though.
I don't know what to call this deck, I don't know the lingo for it.
Congratulations.
I like a strategy similar to this.
I basically make my deck look like one of the standard cookie-cutter decks the first couple turns, and maybe into turn 6 or 7 if the guy isn't owning me yet.
I like to draw out all of their most powerful cards if I can before I utilize my most powerful removal spells.
Bonus points if you can hide a color or two that you are playing.
Ie.. you are playing a quad color deck but only use black and green the first couple turns, then mind fuck the guy when you cast a blue spell on turn 8 that costs 7 mana to cost like Kiora Bests the Sea God's
Most people are manboons and stuck in their "playstyle" and can't adapt to a monkey wrench.
It's how I normally mind fuck monocolor aggro decks.
I favor a single color, then toss out something of a completely non-synchronous color that makes them go "WTF, I don't stand a chance" and they rage quit. Like I might be playing mono white, then toss out an ashiok, nightmare muse after doing some funky mana stuff.