Diablo 2 Mosaic runeword: runes, stats and how it works

Mosaic is a claw runeword for the Assassin, added to Diablo II: Resurrected in patch 2.6, which went live on 15 February 2023 ahead of Ladder Season Three. It was one of eight new runewords in that patch, alongside the helm runeword Cure.

What runes make Mosaic?

Blizzard's patch 2.6 notes give the recipe as Mal + Gul + Amn, in a claw, with a required level of 53. The notes don't state a socket count.

What are Mosaic's stats?

These are the final stats from Blizzard's patch 2.6 notes:

Stat	Value
Chance for finishing moves not to use charges	+50%
When a finisher is executed this way	refreshes the expiration timer of the stack
Martial Arts (Assassin only)	+2
Increased attack speed	+20%
Enhanced damage	+200–250%
Attack rating	+20%
Life steal	7%
Cold skill damage	+8–15%
Lightning skill damage	+8–15%
Fire skill damage	+8–15%
Prevent monster heal	yes

Where Blizzard gives a range, the value is rolled when the runeword is made.

What does Mosaic's charge effect do?

Assassin martial arts skills build up charges, and a finishing move normally uses them up. Mosaic gives each finisher a chance to leave the charges in place. Blizzard's developer's note explains why it is 50%: "so you can either wield one to get that 50% chance or dual wield for that 100% chance of not consuming charges". When a finisher keeps its charges this way, the stack's timer is also refreshed.

How did Mosaic change before release?

Mosaic was tested on the public test server from 24 to 31 January 2023. In Blizzard's notes for that test, the third rune was Thul rather than Amn, and the chance not to use charges was 25%. The final notes strike through the 25% and replace it with 50%, add the timer refresh, and remove an "Adds 3-14 Cold Damage" line. Blizzard summed it up as: "We went all-in on increasing the strength of the Mosaic Rune Word."

Can you make Mosaic outside ladder?

Blizzard's 3.1.1 patch notes for Reign of the Warlock include the fix "Fixed not being able to craft 'Mosaic' runeword online non-ladder", so Mosaic can be made in online non-ladder games. Blizzard hasn't published new stats for Mosaic since patch 2.6, so the table above is the latest full set.

How we checked

The recipe, level, stats and developer's note come from Blizzard's patch 2.6 notes, and the test-server values from Blizzard's PTR 2.6 notes. The non-ladder fix is from Blizzard's 3.1.1 notes. All were read on news.blizzard.com on 22 October 2026. We don't use fan sites or archived pages for runeword stats. If Blizzard hasn't published a value, we say so.