MU Online Chaos Machine Rates Guide
Use this MasterMU Chaos Machine rate guide to check equipment upgrades, Chaos Items, Wings, Fenrir, Errtel, Pentagram Mastery and Earring evolution success rates before starting a combination.
Chaos Machine Guide Contents
Equipment · Chaos Item · Wings · Fenrir · Errtel Level Up · Errtel Mastery · Pentagram Mastery · Earrings
Equipment Strengthen Rates
Your equipment does not break when an Equipment Strengthen attempt fails.
Regular Combination — Chaos Item
Wings and Cloak Combination Rates
Fenrir Combination Rates
VIP adds 10 percentage points to every Fenrir combination stage.
Errtel Level Up Rates
Protection recommendation: Use Elemental Talisman of Chaos Assembly to prevent the Errtel from breaking after a failed attempt. We recommend ETCA from Rank 3 onward, after deciding whether the Errtel will be used for PvP or PvM.
Errtel Mastery Upgrade Rates
The Mastery rate applies to Errtel Ranks 1,2, 3, 4 and 5 only when every rank is at the same required level.
Recommended: Upgrade the applicable Errtel ranks to Level 10 / 10 / 10 / 10/10 to reach the 100% Mastery rate.
In case of failure, all resources will be lost.
Pentagram Mastery Evolution
Earring Upgrade Rates
Chaos Machine Rates Quick Reference
Check the Free and VIP rate before combining, use Luck where supported, protect high-rank Errtels with ETCA and align Errtel Ranks 1–5 at Level 10 for the 100% Mastery rate. For Earrings, a +15 source item provides a 100% evolution rate in every listed tier.