Binding Charms for sale in boutique for like 5 or 10 silver or for sale at an NPC.
Before people start replying with stupid comments like you can just buy guardian scrolls
Here's Why
There is nothing like running out of safe red named with an inventory full of sadness cards, level 1 arrows or other crappy items.. getting killed then exploding with pointless drops.
Sure most people won't do that, but either way it would be nice to have another security blanket in-case for some reason you run out of scrolls during a pk fest and you end up dropping something you donated for.