I'd say toxic & fire rate & multi-shot. Last time I've used it around 1 year ago, so not really sure.
Might be a good weapon for Nell? I'd love to see some builds.

This is what I have on mine:

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=3541682292

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=3541682729

I may consider changing the free core slot for a weak point core or a rounds per magazine core for Nell, right now I think this is better because this gun is only good with Gley or Serena and magazine size is not as useful for them.

I don't use it as often because I prefer to run albion with Serena and restored relic with Gley but I think is an okish gun.

Looks pretty solid.