CRT + 1.
Atk + 3, P.Atk + 1 and increases critical damage by 3% per 20 base CRT of the user.
If the enchanted equipment is grade D, additional P.Atk + 1 per 20 base CRT.
If the enchanted equipment is grade C, additional P.Atk + 1 per 20 base CRT.
If the enchanted equipment is grade B, additional P.Atk + 1 per 20 base CRT.
If the enchanted equipment is grade A, additional P.Atk + 1 per 20 base CRT.