Endless Cellar Dwellers

When Endless Cellar Dwellers enters play,
distribute two -1/-1 counters among one,
or two, target creatures
{b}, Discard a card: Create a 1/1 black Vampire
Knight creature token with Lifelink. Activate this
ability only once each turn.
"As it turns out, most Vampires has a score or scions,
lying in starved topor. Awaiting blood rituals to
awaken them."