Silas's string of bad-good luck continues.
The sniper managed to shoot him in the back (barely - with a "22" to-hit).
And Silas managed to pass the initial Fort save versus the Blue whinnis poison on the dot (DC 14).
Which is good, because he would have flubbed the secondary save and fallen unconscious in the middle of the street (rolled a total of "6" on that save).