At 3rd level, the brown-fur transmuter learns to harness the power of her magic to empower her transmutations. Whenever the brown-fur transmuter casts a transmutation spell using one of her arcanist spell slots, she can expend 1 point from her arcane reservoir as a free action to bolster the spell. If the spell grants a bonus to an ability score, the bonus then increases by 2. If it grants a bonus to more than one ability score, only one of the ability scores gains this bonus. The brown-fur transmuter cannot expend more than 1 point from her arcane reservoir in this way. This ability replaces the arcanist exploit gained at 3rd level.