> For the complete documentation index, see [llms.txt](https://guides.epicmu.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guides.epicmu.net/chaos-machine-craft/mastery-crafting-upgrading.md).

# Mastery Crafting/Upgrading

Master the MU Online Mastery Crafting System including item upgrading, crafting materials, enhancement mechanics, success rates, and advanced progression strategies in EPICMU Season 21.

<h2 align="center">Hello Adventurers of the Epicmu Universe !!</h2>

{% hint style="info" %}

<p align="center">Now let's remove the seal from your BloodAngel items, just go to the chaos machine located in Lorencia/Noria.</p>
{% endhint %}

<figure><img src="https://676687583-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgxJrWcmzkEbdFVF3z6KB%2Fuploads%2Fpxh42afYIAYmqYc70m2d%2Fundefined%20-%20Imgur%20(2).gif?alt=media&amp;token=28b0bbe1-e8cd-4593-8520-676c6ca0d3b9" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}

<p align="center">Open the Chaos Machine Window</p>
{% endhint %}

<figure><img src="https://676687583-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgxJrWcmzkEbdFVF3z6KB%2Fuploads%2F6tdayWOktctHedBYln49%2FScreenshot_309.png?alt=media&amp;token=aeb85055-d727-42eb-958f-f4e32f20abe3" alt="" width="227"><figcaption></figcaption></figure>

{% hint style="info" %}

<p align="center">The requirements are:</p>

<p align="center">Item +11 + 16 Option</p>
{% endhint %}

<figure><img src="https://676687583-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgxJrWcmzkEbdFVF3z6KB%2Fuploads%2F9CdwxYwJKs9sE4GaBT6k%2FPjETKxd%20-%20Imgur.gif?alt=media&amp;token=de73d383-5318-4d41-b33c-77492daba6c2" alt="" width="563"><figcaption></figcaption></figure>