Mara, Bone Collector

When Mara enters the battlefield create a 4/1 Skeleton Warrior legendary creature token named Marrow with "{b}: Regenerate this creature."
Skeletons you control get +1/+1 and "When this creature dies draw a card."
Sacrifice a Skeleton: Each opponent loses 1 life
and you gain life equal to the life lost this way.
"These bones are mine." - Mara Selek