Hearthpwn

Currently 9-0 with this deck. Feel free to tech in a Kezan Mystic if you're sick of the Ice Block mage

Mulligan hard for Innervate and Astral Communion or pick them in your discover. Afterward, don't bother picking them again. This combo is extremely consistent and I've only had one game so far where I had to wait until T4 to Astral. Most games I get it T1 (with coin) or T2.

Deathwing is mandatory for a full board clear, as is Reno for a continual heal. Rag is highly encouraged as it's a huge tempo swing. The rest are all up to you. I prefer having taunts to keep aggro off my back but Ysera and Icehowl could be good additions as well. I like Rafaam for the surprise damage with the +10/+10 and flexibility with the 10 damage but I know he's not everyone's cup of tea.

Kun can help avoid OTK issues (I don't really know of any big burst decks aside from infinite damage mage) and act in place of Reno if you don't draw it and need the health. Kun's also nice in conjunction with a Rafaam spell.