Dark Tutelage
Enchantment
Oracle Text
At the beginning of your upkeep, reveal the top card of your library and put that card into your hand. You lose life equal to its mana value.Rulings (3)
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Wizards of the CoastThe mana value of the revealed card is determined solely by the mana symbols printed in its upper right corner. The mana value is the total amount of mana in that cost, regardless of color. For example, a card with mana cost
has mana value 5.
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Wizards of the CoastIf the mana cost of the revealed card includes
, X is considered to be 0.
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Wizards of the CoastIf the revealed card has no mana symbols in its upper right corner (because it's a land card, for example), its mana value is 0.