Queen of Bones

Into the depths {1}{b}{b} (Instead of casting this card from your hand or the command zone, pay its into the depths cost and put this card into
your graveyard)
As long as Queen of Bones is in your graveyard, Whenever another nontoken Creature is put into your graveyard from the battlefield, you may create a 1/1 black Skeleton creature token with "{b}: Regenerate this creature."