We know Viper's Ascended Rings drop in Raids, and the Mordrem Loop amulet can have Viper's stats, but are there any Ascended Accessories or Backpacks with Viper's stats in the game? :
Some stat-selectable items did not get reset by the patch. - Bugs: Game, Forum, Website - Guild Wars 2 Forums
Guild Wars 2 How To Build A Revenant With High Damage - gametiptip.com