Quote (SamTheGuru @ 9 Aug 2023 20:50)
You don't need to hold on to sigils, you can salvage pretty much all of them. When you are ready to start doing NM dungeons properly, the tree of whispers will drop a couple around your level to get you started anyway.
I salvage them periodically but I like to keep a range of levels, some I can do and some higher ones for parties but always salvage lower than what I am capable of solo