The next line of a spell description
gives the spell's level, a number between 0 and 9 that defines the spell's relative power. This number is preceded by an abbreviation for the class whose members can cast the spell. The Level entry also indicates whether a spell is a domain spell and, if so, what its domain and its level as a domain spell are. A spell's level affects the DC for any save allowed against the effect.
The domains a spell can be associated with include Air, Animal, Chaos, Death, Destruction
, Earth, Evil, Fire, Good, Healing
, Law, Luck, Magic, Plant, Protection, Strength, Sun, Travel, Trickery, War, and Water.