Aura (Ex)
A cleric of a good / lawful deity has a particularly powerful aura corresponding to the deity's alignment (see the detect evil spell for details).
Spells
A cleric casts divine spells which are drawn from the cleric spell list presented in Spell Lists. His alignment, however, may restrict him from casting certain spells opposed to his moral or ethical beliefs; see chaotic, evil, good, and lawful spells. A cleric must choose and prepare his spells in advance.
To prepare or cast a spell, a cleric must have a Wisdom score equal to at least 10 + the spell level. The Difficulty Class for a saving throw against a cleric's spell is 10 + the spell level + the cleric's Wisdom modifier (14 + spell level)
Like other spellcasters, a cleric can cast only a certain number of spells of each spell level per day. His base daily spell allotment is given in the Core Rulebook. In addition, he receives bonus spells per day if she has a high Wisdom score (see Table in Core Rulebook: Ability Modifiers and Bonus Spells).
Clerics meditate or pray for their spells. Each cleric must choose a time when he must spend 1 hour each day in quiet contemplation or supplication to regain his daily allotment of spells. A cleric may prepare and cast any spell on the cleric spell list, provided that he can cast spells of that level, but he must choose which spells to prepare during her daily meditation.
Channel Energy (Su)
Regardless of alignment, any cleric can release a wave of energy by channeling the power of his faith through his holy (or unholy) symbol. This energy can be used to cause or heal damage, depending on the type of energy channeled and the creatures targeted.
A good cleric (or one who worships a good deity) channels positive energy and can choose to deal damage to undead creatures or to heal living creatures.
Channeling energy causes a burst that affects all creatures of one type (either undead or living) in a 30-foot radius centered on the cleric. The amount of damage dealt or healed is equal to 1d6 points of damage plus 1d6 points of damage for every two cleric levels beyond 1st (2d6 at 3rd, 3d6 at 5th, and so on). Creatures that take damage from channeled energy receive a Will save to halve the damage. The DC of this save is equal to 10 + 1/2 the cleric's level + the cleric's Charisma modifier + bonus from Glory Domain(16). Creatures healed by channeled energy cannot exceed their maximum hit point total—all excess healing is lost. A cleric may channel energy a number of times per day equal to 3 + his Charisma modifier + Feat Bonus(8). This is a standard action that does not provoke an attack of opportunity. A cleric can choose whether or not to include himself in this effect. A cleric must be able to present his holy symbol to use this ability.
