The Book of Horus

Ancient Magical Tome located in Aeristogorod; it keeps the floating city aloft and without it the city will crumble.

One person can use the book each day and can cast a number of its spells at will, equal to the creature's level. The creature can only read spells equal to spell levels it would be able to know.

Spells:
 * 0- Gust
 * 1- Feather Fall
 * 2- Gust of Wind
 * 3- Fly
 * 4- Conjure Minor (air) Elemental
 * 5- ...
 * 5- ...
 * 6- ...
 * 7-...
 * 7-...