Scion of the First Death

Double-strike, Haste, Indestructible.
When Scion of the First Death enters the battlefield each player exiles each creature in
their graveyard, then puts all cards exiled this way
into play under their control; goad each creature
an opponent put onto the controls put onto the battlefield this way.
Whenever an attacking or blocking creature dies
put a 3/3 black and red Demon Knight token
into play under your control.