Life and Death Entwined

Indestructible, Deathtouch, Lifelink
At the beginning of your upkeep, put a Mortal
counter on Life and Death Entwined.
At the beginning of your endstep, if Life and
Death Entwined has one Mortal counter on it,
return all creature cards from all graveyards to
the battlefield under their owners' control. If Life
and Death Entwined has two Mortal counters on
it, remove them and destroy all creatures.