(Gain the next level as a sorcery to add its ability.)
Whenever a creature you control leaves the battlefield, each opponent loses 1 life.
1B: Level 2
Creatures you control get +1/+0 and have menace.
B: Level 3
Creature cards in your graveyard have sneak 3B.
You may cast creature spells from your graveyard using their sneak abilities.

NOTE: Stock image, not actual card.