Fiddlesticks, the Ancient Fear

Flash, Menace
When Fiddlesticks, the Ancient Fear enters
the battlefield, each other creature gets -X/-X
until end of turn, where X is equal to the total
number of creatures on the battlefield. Whenever
a creature dies this turn, you gain 1 life and each
opponent loses 1 life.
"Fid-dle-sticks. End of men. Fid-dle-sticks.
First of ten!"