Cost of Greed

{x}, Exile Cost of Greed from your hand: You
lose X life and create X treasure tokens.
Whenever a player taps a land for colored mana,
that player loses 1 life.
Lands have "{t}: Add {c}. You lose 3 life and draw
a card." and "{t}: You gain 1 life."
{3}{w}: Cost of Greed becomes a 3/4 creature with
vigilance and first strike and "When this creature
deals combat damage to a player, you gain 3 life
and draw a card."