Mulligans
This is the deck featured in kripparians video https://www.youtube.com/watch?v=gwdLQrF64f4
He can give a guide on how to play it in the video, but the basic concept is to stay alive with Frost Nova and icebock while burning down your enemy with spells , playing hemet will reduce your deck to
2x Fireball
2x Firelands Portal
1x Pyroblast
Which will usually be enough to burst your opponent down