One weird metagame effect of the nonliving is to make the living better. People keep saying things like "I took out Sleep because there were too many Nonliving books".
Pretty much every nonliving creature either has a ton of armor (resilient, incorporeal, or just a golem) or a ton of HP (skeletons) or both (whirling spirit). Given this, I think it's pretty important to choose creatures and attacks that roll a large raw number of dice, rather than have fancy powers like Piercing. Likewise, Fire works on some of them and ignores all that armor, so BURN BABY BURN. (Which is nice, since we also want to burn down all of those plants overgrowing the arena these days.)
I guess Samandriel, Pillar of Light, Blinding Flash, and Staff of Asyra are all obvious answers, but yo, they do the job. In particular Pillar of Light goes from being kind of terrible to frighteningly effective.