|19 Bloom 1301 DE (Kriav)
During the Creation of the world of Kriav, the Grand Arcanes went to work forging a device to draw arcane power from the Web of Magic. The first of its type, a massive object, this Cube of Arcane was built to accelerate the process of making worlds and stocking them. It also served as a shield against rifts from other worlds. They were made with fail-safes that could have far-reaching side effects.
One of the most well-known of these side effects came with the cube's collapse on Kriav. It came from an unhealthy competition between Silvanus and Corellon, each seeking to outdo the other in making of the best fey. Out of carelessness, Corellon made the mistake of expending all of his powers of Creation while also drawing from Kriav's Cube of Arcane. This damaged the Cube's integrity, triggering a fail-safe. On 19 Bloom 1301 DE, the Cube unleashed all of its arcane energy upon the world. It infused the land, weather, denizens, and everything else. Nearly everything acquired some magical taint. Instead of the Cube of Arcane being the source of arcane energy, the world Kriav and everything in it became vessels of arcane.
The other side effects of Kriav's Cube Collapse was the creation of feywild fuses and the Satyr race. Kriav's Tungesti became a magic resistant people, though forever stuck in a barbaric temperament. One tribe of Tungesti suffered the same fate as those that became Satyr, fused with their horses, becoming the first Centaur.