Mind Grind | Magic: The Gathering
Formats Mind Grind is Legal in
Official Oracle Text for Mind Grind
Official Rulings for Mind Grind
1/24/2013 : If another spell or ability instructs you to cast Mind Grind “without paying its mana cost,” you won't be able to. You must pick 0 as the value of X in the mana cost of a spell being cast “without paying its mana cost,” but the X in Mind Grind's mana cost can't be 0.