Sohlon

Looks fun although half of your manabase comes in tapped and you have a lot of mana symbols of a variety of colours at relatively low cost. Might be an idea to have some land search cards in there to help.

You could add in purphoros, God of the forge for an additional win condition and maybe some generator servants to being the giant in more quickly as you have red anyway.

Its a lovely card kin tree invocation however its not really potent enough to build a deck around. The only time its really good is in the early game as it gives you a heavy hitter early on however it wont last long as removal is so prevalent at the moment. Control wont let it hit the table and agro has a whole deck rushing you vs your 4 cards. Other than the parapet and ancestor none of your other cards support it especially Rakshasas secret which risks milling it into your graveyard where you have no means to get I back. I would look at adding something to give trample to the kin tree invocation as at the moment you can easily be stalled. Hex proof, protection or regen would also be good for defence.

Would Fleecemane lion be a better card than the voice of resurgence?

Lol supreme, divine. Oops.

Ajani's presence? Helps prevent a board wipe from divine verdict etc.

Could be an idea to add in a level of control as your basically giving them all the cards they need. The white, one spell a turn enchantment creature from journey would be quite good although its another colour.

Sage of hours, elite arcanist+triton tactics. Turn 5/5 mana you have infinite turns, oh and this stuffs standard.

Add elite arcanist, with triton tactics and sage of hours you can hit infinite turns with 5 mana.

His ability might work nicely with dismiss to dream. Or some of the newer inspired cards which function off untaping.

It casts a instant and resets its self just for 1 mana of any colour. Throw in cards like the pyromancer, gutter snipe, nivix Cyclops or flux charger and you can swing for some serious damage.

Elite arcanist + triton tactics = untap crazyness. Guttersnipe would be a worthwhile investment too. Ral's +1 ability doesn't have all that much synergy with the rest of the deck however other than to open up mana.

I like the theme but with no card draw and limited burn your really going to struggle to get the damage through. You have 8 cards which reduce attack power where i think you would be better served with removal. Are you adverse to using any other standard cards or are you purely using izzet cards?

Thanks for the ideas although i want to keep this standard for the time being.

Id drop the madcap skills and use 4 shock instead. You don't need to worry about blockers too much as you have doomblade to remove biggies and direct damage for little guys and then trample wades in and unless they have board wipe abilities then they are going to struggle especially the direct damage fanatic deals and if push comes to shove you can shock or lightning shock them to the face. Maybe even take out some lightning shocks for searing bloods. They are a pain.

As the spells fed to the elemental wont resolve I'm assuming they won't trigger any of the other creatures abilities. Seams like a bit of a waste if that's the case.

As i said when i suggested it you would need target abilities to really make use of it in an aggressive manner but it does prevent them casting on their creatures and boosts the mist. Shuts down gods willing etc and forces the other deck to play more onto the table rather than sit with cards in hand especially if you have hexproof up.

Any help with lands and the sideboard would be great!

Dismiss to Dream would fit nicely in here and give you a good way of removing creatures providing you have some creatures of your own with target abilities.