Stormonu
NeoGrognard
You misunderstood what I was saying, I think. Let me try it a different way.
Character under the effect of Tongues is called "Speaker."
Speaker says something to a group of four people, call them "Listener A, Listener B, Listener C," and "Listener D."
Listener A is from Rome, and is a native speaker of Latin.
Listener B is from southern Italy, and is a native speaker of Etruscan.
Listener C is from Athens, and is a native speaker of Greek.
Listener D is from Ashurbanipal, and is a native speaker of Persian.
Speaker says something in the unique "language" allowed him by the Tongues spell. He just speaks once, and thinks of the words in whatever language he likes (most likely his native one).
Listener A hears Latin, as if Speaker were using Latin to talk (even though he's not). Listener B hears Etruscan, as if Speaker were using Etruscan (even though he's not). Listener C hears Greek, as if Speaker were using Greek (even though he's not). Listener D hears Persian, as if Speaker were using Persian (even though he's not).
It's a really weird and subtle effect, not directly implied by the wording of the existing Tongues spell.
Actually, from my reading of Tongues, that's incorrect. The "Speaker" would be able to understand anything spoken to him in any of the languages mentioned above. However, when he addresses the four, if he wants someone to understand him, he'll have to chose one of the four languages to speak in - say Latin. The other three speakers will have to either puzzle out what he said or wait until he repeats it in their native language.