Vorel's Proclamation

Each creature on the battlefield that you own
deals damage to its controller equal to the
amount of +1/+1 counters on it. Then destroy
each creature without a +1/+1 counter on it.
"The Simic fell to the Boros when Momir Vig was
killed. We fell again to Nicol Bolas when he invaded
our city. Hear me now Ravnica when I say, we
will never fall again!"
-Vorel of the Hull Clade