Hearthpwn

This fight is kinda unique and repetitive but it works. Keep your cards until you get 2 Knife Jugglers, Radiant Elemental, Embalming Ritual, Topsy Turvy, and Test Subject. You can maximize Northshire Cleric, Acolyte Pain, Coldlight Oracle, Novice Engineer, Dead Ringer, Power Word: Shield, and Sandbinder for drawing the needed cards.

Once you get them, you need to use all these cards on Turn 7. Summon 2 Knife Jugglers, Radiant Elemental, and Test Subject. Use Embalming Ritual on Test Subject. And then destroy him by using Topsy Turvy. It will deal 2 damage to your enemies. Do it until you destroy Reno. It will be long and repetitive process but it's worth it. No timer to worry about too.

You can also check the video: