How can I get a spell like ability without wasting a level?

For fluff reasons, my gunslinger wants to prove his worth by proving he can cast a divination spell without items. (not looking for optimal abilities or anything)

As such I'm looking for a feat, or a trait or anything that might give me a spell like ability. Not looking to sink a level though.

Doesn't matter what spell level, or how many times a day I can cast it. Just want a divination spell!

Edit: I am a scrubby human unfortunately