Soul Shredder is a rare Artifact — Vehicle card from Alchemy: Duskmourn (YDSK), collector number 30.
Haste Whenever one or more other creatures die, Soul Shredder perpetually gets +1/+1. This ability also triggers if Soul Shredder is in your graveyard. Crew 1 {1}, Sacrifice two creatures: Return Soul Shredder from your graveyard to the battlefield. Activate only as a sorcery.