Skullius had thought about it quite deeply. Very deeply, in fact.
He had even reviewed different options, processing them all in a relatively short amount of time because of the Omniscient Thought Cracker – the grain-sized processor within his head, capable of compartmentalising and enhancing thought.
The conclusion he had come to was that the Bashful Abomination's ability to create an affix of anything he wanted was simply too good. However, it was too limited. One of it wouldn't do, especially for what he wanted.
The Hybrid Luman thought about using [Unbound] on the sword, but he was afraid the sword would change into something completely different, after all, he didn't have much control over the choices that came out with Random Upgrades.
They were called Random for a reason.
Therefore, Skullius decided to switch to the best option he had. Vali.