zeta 5's --- OMG

yes, it happened. I was at Dr's office and wanted to improve Umbaran by finally giving omegas to 5s. I thought his zeta was on his leader ability so I bypassed that and clicked last ability (unique) and clicked...WHAT? OH NO...oh well, I do use Umbaran so hopefully this zeta helps. Otherwise I don't use 5's for anything else. I don't have a clone squad and I think he's a g9 so not going into my arena. Perhaps he's useful in raids, i.e., P1 with Jedis as he counterattacks? Would like to hear other's thoughts on how I can maximize this zeta...doh!