Jigsaw, the defiler

when Jigsaw enters the battlefield, each player
loses 7 life
unless they discard two cards or sacrifice a
nontoken creature.
{1}{p/b}{p/b}{p/b}{t}: put three trap counters on target
creature
at the beginning of each upkeep, remove a trap counter from each
creature with a trap counter on it, then each
player loses 4 life for each trap counter removed
this way