Dark Tutelage | Magic: The Gathering
Formats Dark Tutelage is Legal in
Official Oracle Text for Dark Tutelage
—Seneca, Epistles, trans. Gummere
Official Rulings for Dark Tutelage
8/15/2010 : If the mana cost of the revealed card includes , X is considered to be 0.
8/15/2010 : If the revealed card has no mana symbols in its upper right corner (because it's a land card, for example), its converted mana cost is 0.