Shar, Lord of Insanity

Each nonland card in your hand has madness . The madness cost is equal to the cards converted mana cost minus {2}. (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
Whenever you discard a land card. Shar, lord of Insanity deals X damage to target creature or player where X is the number of lands you control.