The Berserker

At the beginning of each combat phase, put
a berserker counter on target creature you
control. (A berserker counter gives a creature
+2/-2 and "This creature attacks each urn if able.")
If a creature would be destroyed by it's berserker counters, it deals damage equal to it's power to
any target.
"Whether friend or for... They were said to slay everything around them."