Ideally, you'll want to play Essence Flux on a Spirit you control that comes with an enter the battlefield trigger
Once you have all the Wildcards you need to craft your deck (every card is crafted 1:1, no need to have 2 or more Wildcards to craft one card) you can head into the deck builder, enable crafting mode and build the deck of your dreams
The best part of the card is its ability to draw cards when the opponent's monsters are destroyed by battle or card effect
However, the less difficult ones (Beginner, Intermediate, and Advanced) have a lower chance of rewarding the pack
I also didnt run any colorless cards in Izzet, other than Secluded Starforge , which is a solid late-game option for building up a robotic army
Despite his impressive performance in this kind of deck I can't bring myself to give Guttersnipe an A cube slot as he is so so narrow