Frenzy Fever

Enchant target Hunter
Enchanted creature gets +2/+2 for each Frenzied
creature you control and is Frenzied in addition
to its other creature types.
Science once again goes a step too far with the
invention of a medicine that will give you the Frenzy
virus. There's probably someone out there willing to
try it... Um, that someone isn't you, is it?