Random Card of the Day #195:
Plague Wind - 7BB
Destroy all creatures you don't control. They can't be regenerated.
A little too expensive to see play in duels, especially in a color that doesn't really get non-suicidal mana ramp. But this thing in EDH matches. It is the bomb. No, really. It kicks everyone's ass and often times results in a player losing.
If there was a 9-cost sorcery that would win games, this would be one of the contenders. Like I said, too expensive to see play in any other other format than EDH, but it does what it's supposed to do. 4/5