This thing boosts the strength of Dark Blade as well. Great to stack with dark clutch ring. My Sharp Murky Hand Scythe +10 has an AR of 316. With the blindfold mask 319, with the clutch ring 328. Now when I buff it with Yorshka's Chime+10 (spell buff 263) the AR goes to 599 1h 603 2h. Without the ring and mask, and just dark blade: 540, with just the mask 554, just the ring, 582.