Electro Wizard Challenge!

I couldn't find an official link to this so I'm going to copy word for word what it says in CR.

Build a deck with the Electro Wizard; all cards are available in this special challenge. Each win increases your prize; at 12 wins you receive the top prize AND the Electro Wizard! (You get one free attempt)

Overall I'm super hyped for this! At the very least SC has given everyone a free Grand Challenge.