Moved to Graphics forums.
I guess all shade sigs are posted on our forums, rest of heroes simply were not made.
So you have 2 options; either ask shade (the real shade xD) and request the ones u want from him, or make them yourself.
No one would make voluntarily 40~ sigs like this, you could request one specific hero then maybe someone would make it for you. I made something like this some time ago
Trust me, its really time consuming and requires more than basic graphics editing knowledge, so i wonder that someone will bother to make it.