casualty x. the copy isn't legendary and has starting loyalty x. (as you cast this spell, you may sacrifice a creature with power x. when you do, copy this spell. the copy becomes a token.)
+1: each opponent loses 2 life unless they discard a card. if you control a demon or devil, you gain 2 life.
-2: create a 1/1 red devil creature token with "when this creature dies, it deals i damage to any target."
-7: target player draws seven cards and loses 7 life.