That's a great question. It would be a particular combination where the reader would pick up on a mentor/guide student/ traveler vibe.
Good cards would be the Hierophant, Hermit, Temperance or King/Queen of Cups for the mentor. And maybe the Fool, Four of Swords, Four of Cups, Five of Cups, Eight of Cups, Five of Pentacles or Eight of Pentacles for the patient.
To be honest, it might come out in any number of cards and combinations. It's all about the energy they convey.