D, Beholder of Death

Whenever a creature you control dies, D,
Beholder of Death becomes the colors of that
creature. If that creature was named D, Hunter
of the Dead, instead sacrifice D, Beholder of
Death, and return that card to the battlefield
with a +1/+1 counter on it.
Whenever a creature that shares a color with D, Beholder of Death dies, you gain 1 life.