It last the entire battle, which is actually quite neat. Though you dont want k2 get debuffs, that's the only risk. I fully disagree w everyone saying his zeta is the worst. You Just need other specific characters (excluding cls) besides him, who needs A zeta as well. One of them is obviously cassian. With that he is A massive tree in your rebel/r1 team. My k2 is g9 and already got 31k protection.. Just protect him for debuffs and Let him counter everything. Go clutch your çhest and scream at the gods: this is what A tank should be. ewoks only tickle him. hè really is A tree. Though he needs A team.
Soo consider other toons first if you are A quickie that only wants to zeta toons to be suddenly strong and go w the meta. This one needs creativity