We don't have a guild sig and a few other guilds do. If anyone wants to make one go ahead, but I'm not sure many people will use it since there is a one image restriction on signatures.
I have just added this image to my signature. I'm not skilled at photo editing so I just crossed out the Legendary instead of deleting it and adding the BtD image over the sign
Looks kind of like blood dripping which matches our guild name. If you would rather it in red here it is
I like the first one for my sig but I guess it's whatever you like and whatever your sig is if you want to add one. They are both png (transparent) so it should be easy too add one to your sig but if you need help just ask me
It isn't required obviously but if you want it you can.
Also it's just an image from flamingtext.com but they have many other templates if you want to choose another it is easy to use, just make sure you set the background to transparent if you want to add it over your current sig