Amalgamation: Soul Splinters (rarity tier-up) - Horadric Cube recipe - Diablo IV Season 15

The Amalgamation: Soul Splinters (rarity tier-up) recipe in the Diablo IV Horadric Cube takes 5x same Abyssal Soul Splinter type AND rarity and produces 1 Soul Splinter of the same type, next rarity tier up (Lesser/Magic -> Splinter/Rare -> Greater/Legendary -> Abyssal/Unique).

Inputs

• 5x same Abyssal Soul Splinter type AND rarity - GAP: count of 5 comes from a single forum poster's confirmation ('IT WORKED!'), not an official source; Blizzard's own text only says 'same type and rarity'

Output

• 1 Soul Splinter of the same type, next rarity tier up (Lesser/Magic -> Splinter/Rare -> Greater/Legendary -> Abyssal/Unique)

Restrictions

• Max 3 Soul Splinters equipped at once
• Jewelry sockets only (Leoric's Crown makes the helm slot count too)

splinterHidden recipeseasonalNew in Season 15

GAP: exact splinter count and any gold cost are undocumented by Blizzard and by every source consulted for this entry; the count of 5 is carried over from a single Blizzard forum thread confirmation and cross-checked against five 2026-09-19 searches (enumerated in amalgamation_gap_sources) that describe the tier-up mechanic but none state the exact number or materials. Soul Splinter effects per tier (Lesser/Splinter/Greater/Abyssal, per a single community splinter guide): Anguish Attack Speed+Crit Strike Chance 5/10/15/20% (+30% resource cost); Sin Max Life 20/30/40/50% (-30% max resource); Lies gold+materials 40/60/80/100% +25% XP (always Weakened+Vulnerable); Black Soulstone +1.0/1.5/2.0/2.5% damage per soul stack up to 200 stacks (+1% damage taken per stack); Pain Damage Reduction 10/15/20/25% (-30% Movement Speed); Mother Unhindered, touch applies Vulnerable, stuns after 100/150/200/250 touches; Hellfire +20/30/40/50%[x] damage (-100% Crit Strike Chance); Damnation elite kill grants +1 Monster Power and +25% XP for 10/15/20/25 seconds.

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