An upgrade decision in three questions
| CHECK | WHAT TO KNOW |
|---|---|
| Can I use it? | Class, advancement, slot and skill compatibility |
| What does it improve? | The exact Ability or Extra Damage effect |
| What does it cost? | The current recipe and any loss on failure |
Prepare for the journey
Check off what you have ready before entering, crafting or changing your build.
Step by step
- 01
Open the fifth-class Ability system and distinguish ordinary Ability cards from Extra Ability cards.
- 02
Inspect whether the card applies to your class, equipped attack and selected Nuke, Bolt or Wide route.
- 03
Equip a compatible card and confirm that the intended effect is active before buying upgrade materials.
- 04
Upgrade one route at a time and compare its effect at the same hunting spot. Preserve the materials needed for prerequisites.
What makes the difference
Owning a card does not mean its option is active. Check slot compatibility and the skill to which the effect applies.
Sources & realm rules
WEBZEN references explain the underlying system. These instructions use original MU WAR wording and practical advice; version differences are identified where they matter. Custom chances, rewards, availability and item requirements are decided by the current client. Live realm timetable ↗.
