The detection spells have many uses, all related to gathering information. They can be used to see hidden objects, give information about treasure, or even scry out the true nature of your foe. detect evil makes evil easy to identify, with a dark red aura detect good causes good people to glow with a golden aura detect hidden increases chance of detecting hidden people/things detect invis allows the caster to see the unseeable detect magic shows all spells affecting a person detect poison determines if food is safe to eat farsight searches for sentient beings near the caster identify gives information about the nature of an object know alignment determines the moral character of a monster or person locate object finds a specific item