From looking at the spoiler, it seems like you can now create a supremely aggressive deck consisting of almost nothing but one-drop creatures and some cards to protect you from sweepers. This is probably really vulnerable but I'd like to get people's opinions.
Oppressive Rays does a great Chained to the Rocks impression in a hyper-aggro deck like this, is much more reliable, and powers up Athreos. Boros Charm and Athreos keep you from getting swept, and every creature except Satyr powers Athreos up. My main concern is I'm not sure if the mana works at all, only 20 lands might be a little greedy in a 3-color deck like this.
Mana Confluence was made for decks like this, so you could be super greedy. Playtest to get the feel to see if 20 lands is good for you. Also I sort of see the pros in Oppressive Rays but you might be better off with Chained to the Rocks, Golgari Charm(Greedy with Mana Confluence, but allows you to save Boros Charm for the "In Response to Sphinx's Rev"), or Blinding Light (Blinding Light is really iffy but exile anything is pretty strong). I would also suggest trying out Firefist Striker as against Midrange decks the "Target creature can't block" is really quite good. A possible card to consider is Ash Zealot as it helps you in the aggro vs aggro match up.
This may seem silly but Frostburn weird may be very good sideboard material for you. A W/R burn deck would absolutely love to face you, as they get so much value out of Searing Blood since you have all 1 butts and Frostburn weird solves that, while also being a single card like Firedrinker Saytr that control has to answer eventually.
A few lasting thoughts is that the deck list currently it's horribly vulnerable to a lot of cards(Golgari Charm, Bile Blight things that get around indestructible and regenerate), though the main advantage being that you can do so much damage so quickly.
My main concern is I'm not sure if the mana works at all, only 20 lands might be a little greedy in a 3-color deck like this.
You're actually only playing 16 lands. Since Mutavault has long been an auto-include, it may not be too obvious - but in this deck you can't actually cast anything with it (with the sole exception being the one mana in Athreos, which you only play 2 of). In other words, Mutavault doesn't do anything as a land, meaning that other lands or turn 2 creatures will be strictly better. Firefist Striker comes to mind, but you'll also need more lands for certain.
From my limited testing; Orzhov Charm was solid, Servitude was ok but slow/off mana curve(prob 1 main and 2 God or just 3 God main), Righteous Charge was a blowout most of the time (I went up to 3, in the deck it was equivalent to Overrun in green), Loyal Pegasus was half the time situational (so I like the idea of slashing 3rd color for more 2/xs), Spear was ok but mana didn't always work out and sometimes I rather have a removal spell or a Righteous Charge (alot of the time the later).
I do like the idea of Oppressive Rays (cheap and ez) but think Mutavault isn't what this deck needs, like poster above said.. hardly any of our cards have colorless mana costs. The build I play was for the most part pretty resilient vs removal but dead to Elspeth, Sun's Champion so that is something to consider.
4 Godless Shrine
4 Blood Crypt
4 Sacred Foundry
4 Mutavault
4 Boros Elite
2 Dryad Militant
4 Firedrinker Satyr
4 Gnarled Scarhide
4 Rakdos Cackler
4 Soldier of the Pantheon
4 Spike Jester
4 Tormented Hero
4 Oppressive Rays
Oppressive Rays does a great Chained to the Rocks impression in a hyper-aggro deck like this, is much more reliable, and powers up Athreos. Boros Charm and Athreos keep you from getting swept, and every creature except Satyr powers Athreos up. My main concern is I'm not sure if the mana works at all, only 20 lands might be a little greedy in a 3-color deck like this.
This may seem silly but Frostburn weird may be very good sideboard material for you. A W/R burn deck would absolutely love to face you, as they get so much value out of Searing Blood since you have all 1 butts and Frostburn weird solves that, while also being a single card like Firedrinker Saytr that control has to answer eventually.
A few lasting thoughts is that the deck list currently it's horribly vulnerable to a lot of cards(Golgari Charm, Bile Blight things that get around indestructible and regenerate), though the main advantage being that you can do so much damage so quickly.
You're actually only playing 16 lands. Since Mutavault has long been an auto-include, it may not be too obvious - but in this deck you can't actually cast anything with it (with the sole exception being the one mana in Athreos, which you only play 2 of). In other words, Mutavault doesn't do anything as a land, meaning that other lands or turn 2 creatures will be strictly better. Firefist Striker comes to mind, but you'll also need more lands for certain.
4x Loyal Pegasus
4x Boros Elite
4x Dryad Militant
2x Judge's Familiar
4x Tormented Hero
2x Spear of Heliod
2x Righteous Charge
4x Orzhov Charm
2x Doom Blade
4x Godless Shrine
4x Temple of Silence
8x Plains
4x Swamp
From my limited testing; Orzhov Charm was solid, Servitude was ok but slow/off mana curve(prob 1 main and 2 God or just 3 God main), Righteous Charge was a blowout most of the time (I went up to 3, in the deck it was equivalent to Overrun in green), Loyal Pegasus was half the time situational (so I like the idea of slashing 3rd color for more 2/xs), Spear was ok but mana didn't always work out and sometimes I rather have a removal spell or a Righteous Charge (alot of the time the later).
I do like the idea of Oppressive Rays (cheap and ez) but think Mutavault isn't what this deck needs, like poster above said.. hardly any of our cards have colorless mana costs. The build I play was for the most part pretty resilient vs removal but dead to Elspeth, Sun's Champion so that is something to consider.
Throw in a x1 Spear of Heliod or something.
Modern - Bogle, Infect (hey, i'm new!)
EDH - Prime Speaker Zegana, Reaper King
Standard - MBD, G/b Devotion, Blue Devotion, Boros Burn, BG Dredge, W/G Aggro, Dimir Heroic
ENCHANTMENT AGGRO!