Suspended Rebirth

As an additional cost to cast Suspended Rebirth, sacrifice a creature.
Suspended Rebirth enters the battlefield with X
charge counters on it where X is the sacrificed
creature's converted mana cost.
{t}: Remove all charge counters on Suspended
Rebirth and add that many {c} to your mana pool.
{4}, {t}, sacrifice a creature: Put X charge counters
on Suspended Rebirth where X is the sacrificed creature's converted mana cost.