Leyline of Madness

If Leyline of Madness is in your opening hand,
you may begin the game with it on the battlefield.
All spells that aren't on the battlefield have
madness. The madness cost is equal to its mana
cost. (If you discard a card with madness, discard it
into exile. When you do, cast it for its madness cost or
put it into your graveyard.)
Whenever a player discards a card, they lose life
equal to the number of cards they have drawn
this turn.