In the moments as we walk out of the hall and the cave, Asinjin analyzes as he walks.
He tries to determine what spells are being used to watch the and talk to them.
The Spellcraft DC to determine a spell whose effect you are experiencing directing (hearing his voice) is 20 + spell level. My check is a +30, so I only miss on a 1...which is good because I rolled a 2.
So what spell, if any, is begin using to project his voice to us?
Along the same lines, how is he watching us?
Some possibilities: Scrye (unlikely as he would not have been able to see me), Clairvoyance and Clairaudience, Magic Mouth (unlikely, we would have seen it)
Also, he said he was 1000 feet from us, but in which direction did he say he was?