Ghoul pit

When Ghoul pit enters to the batefiled create one 2/2 black ghoul token for each creature that went to the graveyard these turen.
when ever a creature you control you may pay {b} and 1 life, if you do put one 2/2 ghoul black token on the battle field.
If no creature has went to the graveyard these turne sacrifice a creture, you lose life's equals to it's power.