Shitty Mardu

I need to know if this deck is FNM-viable. It's somewhat budgeted, and I'll be improving it as my budget increases. Obvious things I need to change as soon as possible are the Nyxborns, as well as getting more Temples. Constructive criticism would be great.


Creatures;
>Iroas, God of Victory
>Butcher of the Horde x2
>Herald of Anafenza x4
>Monastery Swiftspear x4
>Nyxborn Shieldmate x4 (NEED TO REPLACE ASAP)
>Seeker of the Way x4
>War-Name Aspirant x4
>Bloodsoaked Champion x1

Enchantments;
>Banishing Light x3

Instants;
>Crackling Doom x4
>Lightning Strike x4
>Magma Jet x4

Artifacts;
>Hammer of Purphoros x1
>Spear of Heliod x1

Lands;
>Bloodstained Mire x1
>Mountain x5
>Nomad Outpost x4
>Plains x3
>Swamp x2
>Temple of Triumph x1 (Store was sold out, getting more soon)
>Wind Scarred Crag x3