To qualify to become a thaumaturgist, a character must fulfill all the following criteria.
Spells: Able to cast
lesser planar ally.
Skill Points at Each Level: 2 + Int modifier.
All of the following are features of the thaumaturgist
prestige class.
Weapon and Armor Proficiency: Thaumaturgists gain no proficiency with any weapon or armor.
Spells per Day: When a new thaumaturgist level is gained, the character gains new
spells per day as if he had also gained a level in whatever
spellcasting class he belonged to before he added the
prestige class. He does not, however, gain any other benefit a character of that class would have gained. This essentially means that he adds the level of thaumaturgist to the level of whatever other
spellcasting class the character has, then determines
spells per day and caster level accordingly.
If a character had more than one
spellcasting class before he became a thaumaturgist, he must decide to which class he adds each level of thaumaturgist for the purpose of determining
spells per day.
Improved Ally: When a thaumaturgist casts a
planar ally spell (including the
lesser and
greater versions), he makes a
Diplomacy check to convince the creature to aid him for a reduced payment. If the thaumaturgist's
Diplomacy check adjusts the creature's attitude to helpful the creature will work for 50% of the standard fee, as long as the task is one that is not against its nature.
A thaumaturgist can have only one such ally at a time, but he may bargain for tasks from other planar allies normally.
Extended Summoning: At 3rd level and higher, all
spells from the summoning subschool that the thaumaturgist casts have their durations doubled, as if the
Extend Spell feat had been applied to them. The levels of the summoning
spells don't change, however. This ability stacks with the effect of the
Extend Spell feat, which does change the spell's level.
Contingent Conjuration: A 4th-level thaumaturgist can prepare a summoning or calling
spell ahead of time to be triggered by some other event. This functions as described for the
contingency spell, including having the thaumaturgist cast the summoning or calling
spell beforehand. The
spell is cast instantly when the trigger event occurs.
The
conditions needed to bring the
spell into effect must be clear, although they can be general. If complicated or convoluted condition as are prescribed, the
contingent conjuration may fail when triggered. The conjuration
spell occurs based solely on the stated
conditions, regardless of whether the thaumaturgist wants it to, although most conjurations can be dismissed normally. A thaumaturgist can have only one
contingent conjuration active at a time.
Planar Cohort: A 5th-level thaumaturgist can use any of the
planar ally spells to call a creature to act as his cohort. The called creature serves loyally and well as long as the thaumaturgist continues to advance a cause important to the creature.
A thaumaturgist can have only one
planar cohort at a time, but he can continue to make agreements with other called creatures normally. A
planar cohort replaces a thaumaturgist's existing cohort, if he has one by virtue of the
Leadership feat.