Loremaster Abilities in Pathfinder: Wrath of the Righteous covers all the special abilities, be it passive or active, that one of the thirteen Prestige Classes of the game possesses.
When a new Loremaster level is gained, the character gains new Spells per day as if he had also gained a level in a spellcasting class he belonged to before adding the prestige class. He does not, however, gain other benefits a character of that class would have gained, except for additional Spells per day, Spells known (if he is a spontaneous spellcaster), and an increased effective level of spellcasting. If a character had more than one spellcasting class before becoming a Loremaster, he must decide to which Class he adds the new level for purposes of determining Spells per day.
At 1st level and every two levels higher than 1st (3rd, 5th, 7th, and 9th), the Loremaster chooses one Secret from the following list. He can't choose the same Secret twice.
Cleric Spell, Combat Feat, Druid Spell, Fortitude Secret, Reflex Secret, Rogue Secret, Will Secret, Wizard Feat, Wizard Spell.
At 6th level, a Loremaster gains the ability to understand magic items. Whenever a Loremaster examines a magic item to determine its properties, he gains a +10 circumstance bonus on his Spellcraft skill check.
At 2nd level, a Loremaster adds half his level to all Lore and Knowledge skill checks.