Noble Six, Hyper Lethal

Attacking creatures you control have first strike and
renown 1. (When a creature with renown 1 deals
combat damage to a player, if it isn't renowned, put
a +1/+1 counter on it and it becomes renowned.)
Whenever a renowned creature you control deals
combat damage to a player, double the number of
+1/+1 counters on it.

"Six has made entire militia groups disappear.

[Aragorn, Hornburg Hero]