Gore Magala, the Black Eclipse

Frenzied (Whenever this creature deals damage to another creature, place a Frenzy counter on that creature. A creature with Frenzy counters gain +1/-1 for each Frenzy counter it has, and is Frenzied)

If another creature has five or more Frenzy counters, its controller sacrifices it during their next end step phase.

{b/g}{b/g}: Proliferate