Danzo, Shinobi of Darkness

Flash
Whenever Danzo, Shinobi of Darkness enters
the battlefield or phases in, you draw a card
and lose 1 life for each creature that died under
target players control this turn.
Put a -1/-1 counter on Danzo: Danzo phases
out. (Treat it and anything attached to it as though
they don't exist until your next turn.)