I think if you modify a standard counters matters deck, which these colors do have a bunch of support for, into more of an artifact heavy shell, you can come up with something fun and unique
Izzet Prowess (4.9% of the Winner's Metagame) 4 Dragon's Rage Channeler 4 Monastery Swiftspear 4 Lava Dart 4 Lightning Bolt 4 Preordain 4 Cori-Steel Cutter 4 Mishra's Bauble 4 Expressive Iteration 4 Slickshot Show-Off 3 Scalding Tarn 3 Steam Vents 3 Mutagenic Growth 3 Bloodstained Mire 3 Wooded Foothills 2 Mountain 2 Violent Urge 1 Fiery Islet 1 Thundering Falls 1 Unholy Heat 1 Stomping Ground 1 Arid Mesa 3 Consign to Memory 3 Unholy Heat 2 Spell Pierce 2 Meltdown 1 Surgical Extraction 1 Mystical Dispute 1 Murktide Regent 1 Pick Your Poison 1 Spell Snare At its core, Izzet Prowess is built for speed
Khans of Tarkir Many great things about Tarkir: Dragonstorm are also true for Khans of Tarkir
I just love that you can channel this bad boy for a bit of damage
Support cards to look at: Heliod, Sun-Crowned : Turn that life into a hard-to-stop combo engine Whip of Erebos : Grant lifelink, swing, and never go below 40 again Danitha, New Benalia's Light : Reduces equipment costs and keeps things efficient Final Fantasy's Colorless Might While the colored cards gave us iconic characters and tight synergies, the colorless offerings from the Final Fantasy Magic: The Gathering set are versatile, format-warping tools
Disruption Layers You start with Chingling , a tiny 30-HP basic whose attack Jingly Noise shuts down all Item cards during your opponents next turn