Underneath is some cards you might want to understand the choice of or maybe swap between. They anyway explain the evolving of this deck.
I've choosen:
Charmbreaker Devils over both Archaeomancer, Izzet Chronarch and Mnemonic Wall because the devils can count for all three and have an on-going effect<3
Bident of Thassa over Curiosity because the overall effect is better and allows not just one, but all of your creatures to draw extra cards. The Bident especially works well with this flying-creature-team we got. Both the Niv-Mizzet dragons also love this artifact<3 You won't use the taunt effect a lot.
Niv-Mizzet, the Firemind over Thunderbreak Regent/Dragon Egg/Fledgling Dragon because we can cheat him in (the Leige) and he just works too good with Bident of Thassa and Ral Zarek.
Cackling Counterpart over Spellheart Chimera and Stormchaser Chimera because it's a combo duplicator, is more reliable and works better with the other cards.
Suffocating Blast, Dissipate and Hinder over Riddle of Lightning, Spite of Mogis and Blast of Genius because the deck needed counters/more reliable big creature preventers and the Suff. Blast is much more reliable than the Riddle and Genius Blast.
Comet Storm over Mizzium Mortars because the Storm brings more flexibility and the overload cost of Mortars is a little too expensive.
Commander's Sphere over Izzet Cluestone because of the free sacrifice.
Izzet Signet over Izzet Keyrune because of the lower mana cost.
Pyromancer's Goggles over Pyromancer's Gauntlet due to it's better and almost always secures more dmg.
Cryptic Command over Blustersquall because it's a lot better, Bluster is budget alt.
Untapped/Basic lands over EBT lands because we need the mana straight away with this few lands.
Disintegrate over Lightning Bolt because we need the late game potential and we kinda get to exile a creature and make sure // don't get it back:3
Plea for Power over Steam Augury and Fact or Fiction because I personally like the reliability more and 3 cards for 4 mana of which there is only 1 determined is great! The extra turn potential is neither bad:)
Time Warp over Temporal Mastery, Temporal Trespass, Time Stretch and Stitch in Time because we want to be able to use it again (it's not exiled as it resolves), it's "cheap" and reliable.
Vandalblast over other alternatives because of the cost and overload potential. You can also use Shattering Spree if you prefer.
Preordain over Lunar Mystic because I needed more cantrips, it works alone and it has better synergy with the rest of the cards.
Guttersnipe over Nivix Guildmage since we already have enough copying spells and all the other cards are so good we don't want to discard HAHA. No really, with the other card picks Gutter just synergies better<3
Curse of Bloodletting over Curse of Echoes because it's so much more reliable and somehow boost both your own creatures and spells = Reliability.
Dragonshift has been swapped out with a land, simply because it don't work with Utvara Hellkite the way I first thought it would. Thank you Daedalus19876:)
Treachery is replaced with Control Magic since the mana difference is worth the free reset of the mana.
Caged Sun and Mindwrack Liege has been switched, since Caged Sun not only helps cheating in creatures, but instead mana-ramp for the use of all spells.
Rite of Replication is replacing Cackling Counterpart because it's more value even though it's more expensive and doesn't have flashback.
Cackling Counterpart was hard leaving out... The deck has about enough counter spells, therefor Hinder is out for Cackling Counterpart.
Curse of the Swine is in instead of Staff of Nin because the deck could use another board clearer and the Staff was expensive and you weren't allowed to choose whether you wanted to draw or not. Furthermore the deck got a lot of draw power already.
Burn from Within seems better than Disintegrate and therefor replaces it.
I'll try to swap in Teferi, Mage of Zhalfir with Melek, Izzet Paragon because Teferi really brings a lot of protection to this somehow creature-poor deck and Melek not only reveals your upcoming cards to your opponent but also offers an ability which 4 other cards in the deck already supply.
Sphinx of the Final Word has replaced Elite Arcanist, but if you choose to play with Elite Arcanist here's the prevoius descreption on him: Elite Arcanist<3 + Brainstorm or Cackling Counterpart or Mystical Tutor or Prophetic Bolt or a counterspell or Sarkhan's Triumph or even Twincast/Reverberate to simply double everything up! He works almost like a weaker edition of Melek, Izzet Paragon. If your against an artifact deck Vandalblast/Smash to Smithereens is true hell. Lots of opportunities, check out the instants.
Latest update (New - Old):
Chaos Warp - Turn / Burn
Disallow - Dissipate
Insidious Will - Izzet Charm
Summary Dismissal - Suffocating Blast
Primal Amulet
- Guttersnipe
The Immortal Sun - Bident of Thassa
Vedalken Orrery - Firemind's Foresight
Jace, Unraveler of Secrets
- Prophetic Bolt
Jaya's Immolating Inferno - Ravaging Blaze
River's Rebuke - Teleportal
Baral, Chief of Compliance - Goblin Electromancer
Imprisoned in the Moon - Devil's Play
Rhystic Study - Mercurial Chemister