You can use Kanai's Cube to Extract Legendary Power:Reduce the cooldown of Fetish Army and Big Bad Voodoo by 1 second each time your fetishes deal damage.
1.You need to provide your account.
2.After get Starmetal Kukri, we can help extract its' Legendary Power successfully by using Kanai's Cube.
3.ETA:1-2 days.