For example, in the Gunzerker Berzerker mod, '1' denotes Yippie-Ki-Yay, '2' denotes Lay Waste and '3' denotes Last Longer. Class mods define how you play your character in the Borderlands franchise.These determine a variety of passives and even give you boosts to certain weapons you’re going to use in … This mod requires Amara to be at least level 65. He seems to usually drop a few relics and class mods, and blue and purple ones don't seem that unusual, although, again, that may depend on the mode/level.