Bog of Sorrow

{t}: Add {b}
Whenever a non-token creature dies put a charge counter on Bog of Sorrow.
{b}{b}, {t}, Sacrifice Bog of Sorrow: Put target
creature from a graveyard into play with
converted mana cost equal to or less than the
number of charge counters this had. You lose
life equal to the targeted creature's converted
mana cost.