Quarry Colossus | Magic: The Gathering
Formats Quarry Colossus is Legal in
Official Oracle Text for Quarry Colossus
Official Rulings for Quarry Colossus
4/26/2014 : The value of X is determined as the ability resolves. If you control no Plains at that time, put the creature on top of that library.
4/26/2014 : If there are fewer than X cards in that player’s library, put the creature on the bottom of that library.