Feast of Fiends

Put a +1/+1 counter on each creature on the battlefield.
Witching Hour — {b}{b}, pay 2 life, sacrifice 2 creatures: If this spell would place a +1/+1 counter on a creature an opponent controls, place that many -1/-1 counters on that creature instead. If this spell would place a +1/+1 counter on a creature you control it places that many plus one +1/+1 counters instead.
"For the celebrants who failed to cease their feasting before the Witching Hour, this night would be their last of reve