MU Online | Medieval Fantasy MMORPG

In case of Mastery Shield, ‘3OPT, Luck’ rate will increase by 50%, and when having the highest option,
bonus option of ‘Damage Decrease 75’ rate will increase by 100%.
In case of Legendary Shield, ‘3OPT, Luck, All Stat+15’ rate will increase by 50%, and when having the highest option, ‘DEF 225 Increase,
Extra DEF 150 Increase’ rate will increase by 100%.
Even if you’ve purchased the Mysterious Stone during the event period, no increased success rate will be applied after the event period.

Mastery Weapon & Armor sets are available to purchase once per account.
After +11 Bloodangel Mastery Weapon(7 Days) and Set(7 Days) expires, all options will disappear.
Unused Items from the Vault will be deleted during the maintenance on 2026.07.28 (UTC)
Unused Event Items will be deleted when the Event Inventory resets.
+11 Bloodangel Mastery Weapon and Armor Sets(7 Days) can be equipped after a character reaches LV400.
Mastery bonus options are randomly changed by using Mysterious Stones, and they may NOT include bonus options.
If Mysterious Stone is used on a Mastery Weapon / Armor with the highest options, the highest options will remain, and the bonus option changes.
If a Mastery Weapon / Armor has the highest options and the highest bonus option, Mysterious Stone is NOT available to use. (But Normal Options / Bonus Options can be randomly changed when the Mastery level is upgraded.)
Please note that the range of max option differs in Mastery and Legendary equipment.

If you acquired 2 Options / 2 Options +Luck for Weapon OR All Stat +15/All Stat+7/All Stat+7+Luck for Armor by using Mysterious Stone,
the expiration period will be extended by 1 day.
The maximum extension period is limited to 180 days.
If you use Mysterious Stone after extending 180 days, you can change options, but the period will NOT be extended.

The event has ended.

Ranking will be updated
on 2026.06.03 00:05 AM (UTC).

You can acquire one of the following from the Mysterious Box: Mysterious Stone / 10,000 Ruud / 50,000 Ruud / 100,000 Ruud.
When you use Mysterious Stone to your item, The item option could remain the same or downgraded.
Even though you’ve purchased Mysterious Stone during the event period, no increased success rate will be applied after the event period.
Please note that the range of max option differs in Mastery and Legendary equipment.

MU SEASON 20 part2