Messages would find their way to known chromatic dragons in the cage by paid messengers, and word might then spread through rumor to any hiding their true forms.
"Rich hoards and thick scales to each of you, brothers and sisters. I, Qorxicotl the Black, have recieved a vision from our Queen-Mother, She Of Many Heads. It is important that all of our kind in Sigil gather to hear of this divine decree, and the task we have been set on. Let those with faith in our creator gather for council in the outlands, near the great statues of us the khaasta have crafted, in three days time.
Priest of Tiamat, Q."
A Proclamation To All Chromatics
