BlackRazz

How about Plaxcaster Frogling to keep your stuff safe

I was thinking Rogue's Passage could be a great land to add. It gives you another token, and makes Dune Nephilim unblockable so you can actually get your tokens :D

How do you plan on playing the deck?

Sliver queen would be better than sliver overlord.

I'm not 100% sure what you made either, but it makes my wallet cry :P

put in boros charm to counter boardwipes

Slumbering dragon is always fun. Descendants' Path and Call to the Kindred can help play your dragons faster
if you want more ideas, here's my dragon EDH deck http://www.mtgvault.com/blackrazz/decks/my-favorite-kind-of-deck-d/

Yeah, they're great, but make your wallet cry. I was lucky and pulled 3 monastery mentors. :P

well, if you're going for modern, don't listen to me :P

I'd suggest gitaxian probe and maybe mutagenic growth. They're both "pay 2 life" to trigger your storm one more time. But yeah, instead of geosurge, use seething song.

Very interesting deck idea. How well does it actually work?

if you have lots of money to burn, monastery mentor is freaking amazing. You would have to splash white, but it's like young pyromancer, but better! And if you do go white, you could also get lightning helix. Maybe play around with the idea of soulfire grandmaster too :P

i'd look into some more control while you're waiting to play your big creatures, like some counterspells, like Dissipate or Dissolve. Maybe put it some aetherizes/aetherspouts.

Thank! i'll put those on my list of cards to get

If you're ok with going out of modern, Invigorate is amazing!

Is Terminate what you're talking about? I do like that one
Here are the kill spells i'm looking at: Terminate, Hero's Downfall, Dreadbore, Putrefy, Mortify.

Mana Confluence is good for fixing blue. Another idea is the W/U Fetch land (Flooded Strand) Expensive, but you can search for a white or blue, depending on what you need.
I think you made the right choice of temples. Epiphany is what i'd go for.
I don't think you need shaven reef because you have Confluence in your deck, but that's just my opinion.

I personally like splashing in blue for Jeskai Ascendency (It can help cycle through your deck and get rid of unwanted extra lands) and maybe treasure cruise/dig through time (usually not dig, cuz it costs double blue).
Have you thought of putting in Outpost Siege? I think it's great. On game day, I played vs a boros tokens deck similar to this (he also had brimaz and raise the alarm). Getting out his Outpost siege won him 2 games. First was because I couldn't boardwipe w/out killing myself. The second was I attack w/ siege rhino and tasigur (He was at 4 hp). He block w/ 5 goblins, tapped them for 2 stoke the flames and did exactly 13 damage to me (i was at 13 life)

Not enough 1 drops ;)

I'd love to get that card. I just haven't met anyone who has one who is willing to trade it (I usually trade for my cards). What do you think of putting in a Whip of Erebos? I'm thinking of putting one of those in.