Details: Heroic Duels – 5873 MMR
Passives: Bitter Cold & Mummy Magic

Look for frost spells and Low cost preferably tempo deathrattle minions, except in some specific cases where the reward is really good(like duplicating high tempo/low cost spells with our signature legendary), if you have nothing to do with the mana and you can, you should probably bust your spells, but try to make ample use of your minions and board first before using the spare mana for burn