backpiece that can have "sinister" stats...?
2 other sources:
Legendary back pieces
Raid back pieces
The blood ruby backpack and backpacks from raids are the only ascended back items that can select sinister. All legendary back items can as well.
However, I can’t say for sure it’s the right call because I don’t know what you’re building, but almost every condi class in the game uses a viper’s backpiece rather than sinister. If you’re going to go the the trouble of getting a sinister backpack you might as well just grab viper’s instead. And if you’re using a combination of gear that doesn’t need the condi duration on your backpack, honestly you can just use rampager’s. The cost is peanuts compared to sinister and the DPS loss is probably less than 0.1%.
Good luck!
