My friend was playtesting rogue OBC decks and he was crushing me with this blazingly fast black green madness deck. It looked like
Basking Rootwalla
Wild Mongrel
Strength of Lunacy
Arrogant Wurm
Zombie Infestation
Roar of the Wurm
and the nail in the coffin Mindslicer. He'd be swinging for 6 on turn 3, then like 12 or something on turn 4. It was really, really fast. Then he'd Skeletal Scrying up some more fat beats.