Aselix

Summary
A spell that can only be used by mages with strong demonic descent. The spell creates six gems with extreme magical power manifested in completely random abilities. The effects can be positive or negative, and the same effect has never appeared twice. When used, the gems will separate themselves to opposite corners of the targeted area. The targeted area can be changed to no maximum size, but with a minimum size of one kilometer.

Uses
Due to its completely random nature, the spell is nearly impossible to use in combat and is generally best used as a way to spread chaos across a civilization. The most famous case of its use was Merlin using it to burn the Library of Alexandria.