Kurin, Knight Of Betrayal

Whenever an opponent discards one or more
cards, draw that many cards
Whenever an opponent loses one or more life,
gain that much life
Whenever an opponent sacrifices a creature,
create a 2/2 black knight creature token
If Kurin, Knight of Betrayal would be put
into a graveyard from the battlefield, put
Kurin, Knight of Betrayal onto the battlefield
under the control of a random opponent