Dustblood Shaman

At the beginning of your upkeep, you may sacrifice another creature. If you do, put a Ritual counter on Dustblood Shaman.
{2}{w}{b}, {t}: Activate the Everlasting effect on a card you own in exile with with the X Time counters on it, where X is the number of Ritual counters on Duskblood Shaman.
"You can't kill what is already dead."