Talk:Divine Protection/@comment-36209226-20190619155818/@comment-10330822-20190620005730

Veldora explained that the process of him naming Rimuru and Rimuru naming him would establish divine protection to be cast on him as Veldora's equal.

So the Storm Crest is the result of that. However, his powers were amplified both because the process established a soul corridor between him and Veldora, allowing Rimuru to get his Black Lightning skill, and the excess magicules that were causing the herbs, ore, and monsters to appear in the unsealed cave were instead being absorbed by Rimuru. Which Veldora explained was giving Rimuru the ability to name monsters when he was low on magicules, he was instead using Veldora's excess power.

In short, the Storm Crest didn't make him more powerful, the soul corridor that was created as a result did.