Death-Blight Curse

When this enters the battlefield, put a blight
counter on Death-Blight Curse. at the beginning
of enchanted players' end step, put X+1 counters
on this card, where X is the number of counters
on Death-Blight Curse. When Death-Blight
Curse reaches 15 counters, destroy all creatures
that enchanted player controls. They lose X life,
where X is the number of creatures destroyed
this way.