this deck isnt standard with Koth in it

I took Koth out last night but I forgot to remove him on here

My only question is the relevance of Exava as you don't have many counters in the deck. Unless it's because she's essentially a 4/4 first strike hasty creature.

That's the reason

But once Born of the Gods comes out I'm taking her out and adding in 2 Mogis, God of Slaughter And one more Purphoros, God of the Forge

Rageblood Shaman would be great in this deck

I would agree with RCBurton, Rageblood Shaman should be taken into consideration. I'd also maybe run Madcap Skills it's great in almost anything running red.

Update this for Khans, it would still work great.

Splash in White and make this a mid-range Mardu deck with some goblins and new burn options