Spells per Day: At each level after 1st, you gain new spells per day (and spells known, if applicable) as if you had also gained a level in an arcane spellcasting class to which you belonged before adding the prestige class level. You do not, however, gain any other benefit a character of that class would have gained. If you had more than one arcane spellcasting class before becoming a loredelver, you must decide to which class to add each level for the purpose of determining spells per day and spells known.

Bardic Knowledge (Ex): Loredelvers extensively study the reports of their fellow loredelvers as well as historical and magical texts. You can attempt to recall some relevant piece of information about local notable people, legendary items, or noteworthy places. See the bard class feature, page 29 of the Player's Handbook. You use your loredelver level + your Intelligence modifier (plus levels in bard, if any) to make bardic knowledge checks.

Magical Insight (Ex): A loredelver has an uncanny insight into the workings of magic. You gain a +5 insight bonus on Spellcraft checks made to determine the school of magic of magical auras.

Detect Magic (Sp): A loredelver develops a preternatural sense for the presence of magic. At 2nd level and higher, you can use detect magic (as the spell, page 219 of the Player's Handbook) at will.

Evasion (Ex): Beginning at 3rd level, you have a hairtrigger sense of dangerous magic. If you are exposed to any effect that normally allows you to attempt a Reflex saving throw for half damage, you take no damage with a successful saving throw.

Spontaneous Casting (Su): At 4th level, you gain the ability to spontaneously cast certain spells using your existing arcane spell slots. You can "lose" any prepared spell or spell slot of the designated level to cast a specific spell. You use your highest arcane caster level as the caster level for the spell. At 4th level and higher, you can "lose" any prepared spell or spell slot of 2nd level or higher to cast knock (see page 246 of the Player's Handbook). At 7th level and higher, you can "lose" any prepared spell or spell slot of 4th level or higher to cast arcane eye (see page 200 of the Player's Handbook). At 10th level, you can "lose" any prepared spell or spell slot of 6th level or higher to cast greater dispel magic (ss page 223 of the Player's Handbook).

Fearless (Ex): At 5th level, you have learned to steel yourself against the horrors that guard the places you're exploring. You gain immunity to fear, magical or otherwise.

Arcane Sight (Sp): By the time you reach 6th level, you have honed your sensitivity to the magical auras that surround you. You can use arcane sight (as the spell, page 201 of the Player's Handbook) at will.

Improved Evasion (Ex): Beginning at 8th level, you can avoid damage from certain attacks with a successful Reflex save and take only half damage on a failed save. See the monk class feature, page 42 of the Player's Handbook.

Greater Arcane Sight (Su): At 9th level, you have reached the pinnacle of magical sensitivity. You can use greater arcane sight (as the spell, page 201 of the Player's Handbook) at will.

Adaptation

While the loredelver fills an important role in illumian culture, you can adapt the class to other groups that have an interest in ancient lore. The prestige class is a natural for any secret society with spellcasters who want to break into magically guarded places.