Twin Strikes is a Unique Gloves in Diablo IV Season 15. It comes from Lord Zir (Lair Boss hoard - targeted drop); Any Lair Boss general unique pool / world drop at Torment (chance rises per Torment tier); Horadric Cube: Item Transmutation - Upgrade to Unique (Common base of same type + 1 Enhanced Primordial Dust + 10 Primordial Dust) rolls a random unique of that item category.
Unique power
Double Swing's initial sweep deals [45.0 - 60.0]%[x] increased damage and applies Vulnerable. Subsequent swings deals [90.0 - 120.0]%[x] increased damage and grants Berserking for 3 seconds.
Affixes
Strength
+Ranks to Double Swing (1 - 3)
Where it drops
Lord Zir (Lair Boss hoard - targeted drop)
Any Lair Boss general unique pool / world drop at Torment (chance rises per Torment tier)
Horadric Cube: Item Transmutation - Upgrade to Unique (Common base of same type + 1 Enhanced Primordial Dust + 10 Primordial Dust) rolls a random unique of that item category