Group Predictions have been proven to be dangerous to the entirety of existence and the Web of Fate. While most know that Moon Mages commonly gaze upon the future and give cryptic insights into what is to come, few know that a cabal of Moon Mages can jointly focus their minds and open a much larger window into the Plane of Probability (also known as the Plane of Shadows) permitting them to see a greater portion of the Web of Fate. Group predictions increase the risk of catastrophe for a simple reason: a window into the Plane of Probability creates an opening that can be crossed in either direction. Both the Plane of Abiding (which is where Elanthia resides) and the Plane of Probability are able to be access the other.
When an individual Moon Mage opens a window into the Plane of Probability, the portal is small enough that little can pass through it. However, while Group Predictions allow more of the future to be seen, they also exponentially increase the odds that something can and will pass through. To date, every successful Group Prediction has resulted in a catastrophe - even when the greatest of precautions have been made. Fortunately, only three cabals of Moon Mages are known to have the knowledge needed to perform this group ritual. Unfortunately, the leader of the last cabal, Aaoskar Moonbender is rumored to still be researching new methods to open this avenue of prophecy.