I thinking of a feat or trait that allows a caster to cast 1 spell 1 level higher than his/her current casting level.
So, if i can only currently cast 2nd level spells, this feat allows me the chance to cast 1 3rd level spell with a skill check.
I can not think of the name of this spell or where I saw it.
Thanks.
I don't think you understand what "caster level" is. Having a higher caster level does not mean you can cast spells of higher level than normal.
For example, a 3rd-level wizard can cast 2nd level spells, or cast 1st level spells. Typically, these would all be at caster level 3. However, if he has an ability which increases his caster level by 2, he could cast his spells at caster level 5. He would still only be able to cast 1st or 2nd level spells, though - even though he has an effective caster level of 5, and a 5th-level wizard would be able to cast 3rd-level spells.
One feat that lets you cast at higher caster levels is Arithmancy, but there are several others.
using a scroll can let you use a higher level spell with a check. Maybe that's what you're thinking of?
There is a feat from 3.5 that allowed you to cast a 2nd level spell at first level. You needed to succeed on a DC 8 caster level check to cast it.
It is called Precocious Apprentice.
There isn't any feats like that in pathfinder.
There is a cleric item that allows you to do that with 2 levels higher but as far as I know, there isn't an arcane version of that item.
This is what I was thinking of!
Thanks to everyone who replied.