Leph Arzi, Head Acheron

Indestructable
As long as your devotion to white and black is
less than seve, Leph Arzi is not a creature.
Whenever a creature an opponent controls dies,
you gain 1 life.
Leph Arzi, Head Acheron's power is equal to the
number of creatures in all graveyards.
{p/w}, Pay 2 life: creatures your opponents
control get -1/-1 until end of turn.