Similarly, after reaching Superior Soul Realm, Felix could use another secret technique from the Phaeron Codex called the Soulweave technique. It wasn't an attack. It resembled something like the Spirit Eye, which was reserved only for support.
The Soulweave technique was to merge different soul-bound weapons and turn them into a different weapon. There was a high chance the new soul-bound weapons would surpass the original weapon by at least a level.
Of course, there was also the probability