Matters of the Heart The soul of Arrav is more troublesome than I'd originally thought. If I move him too far from my base, I can feel him fighting against my will. I must find a way to strengthen my hold over him to subjugate him further, else it would be better to destroy him and be done with it. I have been working on an enhancement prism, but the results with ordinary glass weren't enough - I needed a better material. Thankfully, I believe I have found what I need in a volcano on Karamja - a rare black mineral called obsidian. I'll construct a prism from this.