Elden Ring-How to find Finger Slayer Blade (Ranni's Questline)
Finger Slayer blade is in Nokron Eternal City. My guide on how to find Nokron is here: • Elden Ring-How to find Finger Slayer Blade...
Follow the Mimic tear grace bridge left until you reach ancestral woods grace. Follow the path around and the blade will be in a coffin.
If you defeat the ball you will get a mimic tear.