Telephone: Brought to you by the Mysterious Merchant

Well,  for a price I can also teach you spells and feats of my own making. One example is Telephone. What you do is simple. You open a portal to a person. You can see and hear the person, and the same with them. You can talk for up to an hour.  After that, the portal dissipates. Simple! But I'm guessing you have no interest in a purchase? Oh, well.

When you cast it with a higher spell slot, the duration increases by 1 hour.