Page "Velgarth" Paragraph 38

Of the Nine Clans that returned, Five desired to retain their magic, and set forth into the Uncleansed Lands of the Pelagir Hills and Pelagiris Forest.

These, too, prayed to Kal ' enel, goddess of the Kaled ' a ' in, for aid, and became the Hawkbrothers, consensually geas-bound by their goddess.

She ensured that no Tayledras would be born without the Mage-Gift, and bound them to the Uncleansed Lands, charging them with constant movement of their homes, and the task of returning the Uncleansed Lands to the way they were before the cataclysm, returning them to what they would call the Cleansed Lands.

She gave to them the knowledge necessary to construct their Vales, to produce Heartstones, and many other traits, skills and abilities to enable them to best manage to achieve this task.

This geas is broken at the time of the second cataclysm caused by the echo through time of the original, during the events of the Mage Storms trilogy.

It is during this time frame that Vanyel removes his spell that prevented Valdemarans from knowing anything whatsoever of magic and set vrondi against all mages who worked their magic inside Valdemaran borders ( as defined by Heralds ' locations, insinuating that some vrondi would essentially follow Heralds around ) to madden them.