Tender of Shadows

Bargain 2 (You may choose to pay {2} less to cast
this spell as you cast it. If you do it enters the battlefield with two -1/-1 counters on it.)
{t}: Add {b}{b} to your mana pool.
At the beginning of your upkeep, if Tender of
Shadows has any -1/-1 counters, you lose 4 life.
"No gold? There are other forms of payment."