Purging Stone

{w}{w/b}: Remove any number of counters from
you and permanents you control. Sacrifice
Purging Stone.
{b}{w/b}: Destroy any number of auras affecting
you and permanents you control. Sacrifice
Purging Stone.
The Purging Stone does not dispel curses, but recieves
them as a surrogate. The stone itself was once a
person, or some other being.