Elemental Invasions

Does this work on Icecrown realm?

https://wowwiki.fandom.com/wiki/Elemental_Invasions

A guildie was looking for Princess Tempestria in Winterspring for some time now, but she never found her.

From the page you linked:

Quote:

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This was a one-time event over a period of around 2 weeks.

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So it's not supposed to be enabled and most likely isn't.