Place to farm that has no ceiling

It seems like I gibbed myself when I chose Arcanist. My two main damage dealing spells (Trozan’s Sky Shard + Devastation) can’t deal damage to enemies under doorways. My spells keep hitting the ceiling instead. :undecided:

I need an open area that has high level / high density mobs. What would you suggest? I need to farm for Clairvoyance set.

BoC has no ceiling… doesnt it?

Doesn’t work over the bridges in some parts, quite annoying hence I gave up on my devastation arcanist.

I mean, you can just kite them back like 5 steps and they aren’t under a bridge anymore. And I don’t really remember that many overpath bridges in BoC other than the entrance floor.