Good offensive spells to cast in the middle of solid rock (while earthgliding)?

[Gavinfoxx]

Hi, I'm wondering what some good level 3-6 offensive spells to cast for a ranged artificer type, which can be used while both all members of the party and all enemies are currently earthgliding through solid rock?

I'm thinking lots of tremor/earthquake style spells, but I don't know about what would specifically work when you are IN rock. I assume you don't have line of effect to many things, right? So what would work?

[X-Codes]

Possibly use Ethereal Jaunt and cast offensive spells modified by the Transdimensional Spell feat?