I'm looking for clarification on the School Understanding Arcanist exploit. I have searched the boards and not found a specific answer.
Here is the copied text of the ability:
The arcanist can select one arcane school from any of the schools available to a character with the arcane school wizard class feature, but does not have to select any opposition schools. The arcanist gains one ability of that arcane school as though she were a 1st-level wizard, using her Charisma modifier in place of her Intelligence modifier for this ability. The ability must be one gained at 1st level and is limited in its use per day to 3 + the arcanist's Charisma modifier. As a swift action, the arcanist can expend 1 point from her arcane reservoir to bolster her understanding, allowing her to treat her arcanist level as her wizard level for the purpose of using this ability for a number of rounds equal to her Charisma modifier (minimum 1). During this time, she also gains use of the other ability gained at 1st level for her selected school. She does not gain any other abilities when using this exploit in this way, such as those gained at 8th level. If the arcanist already has an arcane school (or gains one later), taking this exploit instead allows her arcanist levels to stack with the levels of the class that granted the arcane school when determining the powers and abilities of her arcane school.
My question is, when spending a point to gain access to the other abilities is your wizard level treated as lv 1 or equal to your arcanist level. (I.E. is "this ability" referring to the lv 1 wizard ability or to the exploit?)
For example:
a 20th level arcanist has the school understanding exploit and has selected the teleportation school and he selects Shift as his first level ability. By spending 1 point he gains access to the conjuration summoner's charm ability. Does he use the Summoner's Charm ability function as a 20th level wizard when empowered or a first.
Assuming summoner's charm operates at lv 20 then here is a follow up question. Does the summoners charm ability apply to duration when the summon is cast or does it check every round. So if the same summoner (assume a CHA bonus of +2) empowers the school understanding exploit and then casts summon monster the following round, is the summon permanent?