Where most arcanists are broad in their study of magic, a spell specialist has her power focused in a few spells. Spell specialists are able to warp and twist the magic of their signature spells in ways other casters cannot.
The spell specialist is an archetype of the arcanist class.
At 1st level and each time a spell specialist gains a new spell level, she chooses a signature spell. The spell specialist can cast this spell without preparing it, in the same way a sorcerer casts spells spontaneously. Even though the spell specialist does not need to prepare this spell, it still counts against the number of spells she can prepare, reducing the number of spells of each level she can prepare each day by 1. A spell specialist can swap out a single signature spell for another spell of the same level when gaining a class level.
The DC for signature spells increases by 1. The spell specialist gains a +2 bonus on concentration checks when casting signature spells; this bonus increases to +4 at 10th level. Additionally, a spell specialist can apply one of the following additional effects by spending 1 point from her arcane reservoir.
A spell specialist can dismiss a signature spell as a swift action instead of a standard action. Alternatively, the spell specialist can dismiss a signature spell that has a duration but isn’t normally dismissible.
The spell specialist can bend the line of a spell that has a line area of effect up to 90 degrees at any single point along the line’s length.
A spell specialist can reduce the radius of a spread or burst effect or shorten the length of a cone. All changes must occur in 5-foot increments, to a minimum of 5 feet. Alternatively, the spell specialist can change the area of effect of a cone spell to a line with a length equal to the spell’s range.
This ability replaces the arcanist exploits gained at 1st, 7th, 13th, and 19th levels.