[PB57] Pindicator searches for his mascot

[Serdoa]

Well, if you go for the cold conversion (call of the brotherhood would be good there IIRC) or if you can get enough mana reg. / enduring mana flask and add Skitterbots for the chill or if you have some other way to chill enemies reliably you could use Hypothermia. I always forget that gem exists because it isn't shown in POB as a viable link till you click "Enemy is chilled" in the config. That should be better than Conc.Effect just because it does not decrease your area which should be a good thing for the nodes themselves, though maybe irrelevant for the tunnels. 

I think Hypothermia + Energy Leech and get rid of Ice Bite could work out well. Frenzy generation shouldn't be an issue for you right now I'd assume?