Capital N in incantations

[Koen G]

I've been thinking about the syntactic possibilities for this sentence. It smells of second person, someone being addressed (...dabas, maybe portas, te). 

So the N in these charms, I guess will usually be a name of someone talked about on the third person? Like the object or subject of the sentence? Or might it be the same person who is being addressed in the second person? Is there some type of sentence we are more likely to expect?