"The Schools of Arcane Magic - Conjuration" is a book in Dalaran, which is related to the Higher Learning achievement, on the ground floor of the Violet Citadel, on a bookshelf behind Archmage Aethas Sunreaver at[30.8, 46.5]
<Penned by the skilled hand of Archmage Ansirem Runeweaver>
Conjuration is the study of summoning - both creatures and objects. Ever really, really wanted a fresh drink of spring water when you're in the middle of nowhere? Conjuration, my friend, is the answer. There is nothing more enjoyable for a mage than creating a fresh slice of bread or a glass of water. Just ask any of us!
More formidable specialists in conjuration can summon several glasses of water at once, or perhaps even a tankard. A few daring wizards have occasionally attempted to summon water without remembering the glass - and thus, the art of summoning water elementals was born. Water elementals are a wizard's best friend. (Felhounds are not, in fact, friendly at all.) A summoned elemental is a formidable ally in combat, a great listener, and they even taste great!
There are several wizards who have chosen to follow the refreshing path of conjuration. Captain Balinda Stonehearth is a fine example of a mage who has chosen to adapt conjuration magic for battle. Perhaps the most famous conjuror of our time, however, was the beloved Archmage Nielas Aran. Aran was not only noted for being able to summon several elementals at once, he also perfected a recipe for conjuring sparkling cider. It should be noted that Nileas Aran was no simple jester. That's what magic is all about.