Give arcfiends underfloor wire vision

[JORJ949]

I would say this is QoL more than balance as the only real change is you have to click the ability less trying to find where the wires are. I tend to know where wires will be in a room (they'll typically be running under the doors) and this would massively help newer players. The correct way to "kneecap" them is to cut the wires to secure areas.