Devil Kazuya, Unleashed

Indestructible
Descend 5 — Devil Kazuya, Unleashed is
tapped and cannot be untapped unless there are
six or more permanent cards in your graveyard.
During your end step, if Devil Kazuya, Unleashed
is untapped, return a creature with mana value
1 plus the highest mana value on your battlefield
or less to your hand from your graveyard.
All players gain life equal to the returned
creatures power.