[1.0] Shasshhiy'Kaish event can spawn more than once

[johnnyzero]

On my current character I've encountered the Shasshhiy'Kaish event twice. The first time was in the elven ruins, where the mobs killed many of the cultists and a weak version of Shasshhiy'Kaish spawned. The second was in Reknor, and I was able to get the full-power achievement. I now have two Crowns of Burning Pain in my possession, one weak and one strong.

While I enjoy spamming out meteors as much as the next guy, I have a feeling this isn't supposed to happen.

Character link for reference.