Need help finding a Feat or Trait

[Tinner]

Can anyone tell me if there is a feat or trait that allows a character to count their character level as their caster level?
I seem to recall there being something like this in PF, or maybe in D&D 3.5?
It was designed to "fix" multi-class character IIRC. My search-fu is failing me today.

[Ringtail]

In 3.5 there was Practiced Spellcaster, which gave you +4 CL to a maximum amount equal to your HD. Is that what you are looking for? It is found in Complete Arcane.

[Halfling Barbarian]

I's now called magical knack, and it's +2 up to your hd. It's in the apg.

[Tinner]

Great! Thanks for the help!