This is the deck I took from Diamond 5 to Legend Day 1 of the New Expansion. I went 18 -5 for a 78% win rate. I'm sure their are cards that can be switched for more optimization. I will put up a screenshot shortly to prove the stats. Mulligan for early tempo and only play polkelt when you know you can survive drawing Yogg and sometimes Solarion Prime. Most of the time you win without playing Yogg but he's an insurance policy incase you don't out tempo your opponent.