The Relentless Heart - Unique - Diablo IV Season 15
The Relentless Heart is a Unique Chest Armor in Diablo IV Season 15. It comes from The Beast in the Ice (Lair Boss hoard - targeted drop); Duriel (also listed in one guide's Lair Boss loot table, Season 14 data); Any Lair Boss general unique pool / world drop at Torment (chance rises per Torment tier).
Unique power
Hammer of the Ancients deals [22.5 - 30.0]%[x] increased damage on consecutive hits to the same target. This stacks up to 3 times.
Affixes
Strength
+Ranks to Hammer of the Ancients (1 - 3)
Where it drops
The Beast in the Ice (Lair Boss hoard - targeted drop)
Duriel (also listed in one guide's Lair Boss loot table, Season 14 data)
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