I think I have more bad ideas that I am more agreeable to, that might not doom my character horribly.

Maybe I could just condense all the extra mana into liquid, or crystals...

Let's give it a try? expertise arcana: (1d20+14)[19]

Spoiler: option 2
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OR, just start shooting endless fire bolts at a cave wall (better yet, let's just be more inefficient and alternate between ice and fire).

Of course, if we have to kill it, all those bolt spells could go to Verdan.