Temporariry increases your rate of fire. Whenever you hit an opponent your rate of fire will increase and the Frenzy duration will wind back by 2 seconds. However, if you don't hit anyone for 5 seconds your ROF will start decreasing by 3% per second.
Mana cost: 10
Recharge time 30s
Frenzy duration: 6+lvl s
Rate of fire per mutant hit: +0.5+0.1*lvl %
Rate of fire per ganster hit: +0.5% at all levels