Grand Ossuary | Magic: The Gathering
Formats Grand Ossuary is Legal in
Official Oracle Text for Grand Ossuary
Whenever you roll , each player exiles all creatures he or she controls and puts X 1/1 green Saproling creature tokens onto the battlefield, where X is the total power of the creatures he or she exiled this way. Then planeswalk.
Official Rulings for Grand Ossuary
6/1/2012 : Any target that is illegal when the first ability resolves won't get any +1/+1 counters. Those counters are essentially lost; you won't get to put them on another creature.
6/1/2012 : For the chaos ability, the total power of the creatures a player exiled is the total power of those creatures as they last existed on the battlefield, including any bonuses from +1/+1 counters, Auras, Equipment, and other applicable effects.