Hearthpwn

Used this Rogue mill deck to demolish poor geddon on my second attempt.
The concept is:

Gang Up your Coldlight Oracles to win in the mill game. 

Youthful Brewmaster and Shadowstep to let you burn more mana on fewer cards and also bouncing that Coldlight Oracle. Also counters Living Bomb which is crucial!

Vanish and Sap his big threats

Lorewalker Cho fills his hand with unusable Deadly Poison and gives you Living Bomb, Lava Burst and Lava Shock, he really does not like targeting Lorewalker Cho so you can use that to your advantage

Clockwork Gnome gives you spare parts which are useful for burning your mana, Loot Hoarder for a nice 2-drop that cycles, which is essential.

Argent Squire is just a solid 1-drop you need that first turn. Replaceable though, but effective against his Hellfire.