It is a very large ritual that requires unique artifacts for the sole purpose of engraving small crystals which are then socketed into larger edifices and imbue

It is a very large ritual that requires unique artifacts for the sole purpose of engraving small crystals which are then socketed into larger edifices and imbued with the spells of many wizards before they are distributed by territorial guilds to common man, in exchange for a recurring obol. Entire fiefdoms have been erected by merchants of these artifacts of power. But as we come to depend on their miracles more and more there are concerns that The Enemy could dispel or corrupt them... well... let's leave it at that, entire schools of warding, counter-warding, arithmancy etc. etc. are dedicated to these topics, more than we could cover here. Oh, and beware of charlatans who want to sell you so-called artificial soulstones, they are awfully common in these halls. The gems are tools made by man to imitate the divine spark, but they can never rival or become the genuine article.