Reservoir

Reservoirs are naturally occurring locations where water is collected and stored for use. In the field of magic, a Reservoir is a building constructed for the purpose of harvesting mana from Azeroth's web of ley-lines in the same manner as the Arcane Sanctums of Quel'Thalas. Reservoirs siphon magic and convert it into energy that can be used for practically anything. Reservoirs can be exceptionally dangerous unless staffed by highly-trained personnel. Negligence of a reservoir's upkeep can result in catastrophic consequences, such as the emergence of arcane fiends and unstable portals.