Liviana , Rotting Demon

Morbid - When Liviana, Rotting Demon enters
the battlefield , if a creature died this turn,
you may entomb a card on your graveyard.
If you do, put one +1/+1 counter on Liviana,
Rotting Demon
As long Liviana, Rotting Demon has a +1/+1
counter on it , it can't block and attack each turn
if able.
"Graveyard is the best armory"