> For the complete documentation index, see [llms.txt](https://eternum-1.gitbook.io/eternum-wiki/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://eternum-1.gitbook.io/eternum-wiki/en/upgrade-systems.md).

# Upgrade Systems

![Forge interface](/files/RYKGbld4HuNHiuMPCO5M)

Equipment rarity progresses from **Common** to **Mythic**. Use the upgrade interface at anvils located on the **Casino +1 floor**, which you can reach through the city temple teleport.

{% hint style="info" %}
**Anvil Location:** Upgrade equipment at anvils on the Casino +1 floor via the city temple teleport.
{% endhint %}

## 💎 Rarity & Tiers

### Upgrade Orbs

* ![Special Orb](/files/HOkvhvVAR1ZUH0qAwLT4) **Special Orb:** Upgrades an item's rarity.
* ![Cleanse Orb](/files/n82LZVNfBIlQ1gdJF5XS) **Cleanse Orb:** Safely downgrades rarity, allowing you to change rarity without risking the item.
* ![Ascension Orb](/files/x5LjapKQHyw1eErdKxlU) **Ascension Orb:** Raises an item's tier at an anvil.

{% hint style="warning" %}
**Ascension & Mythic Rarity:** Monster drops normally reach **Tier 4**. Use **Ascension Orbs** to go beyond Tier 4. Achieving **Mythic rarity** requires **Tier 6**.
{% endhint %}

### Tier Multipliers

| Tier       | Stat Multiplier |
| ---------- | --------------: |
| **Tier 1** |            x0.4 |
| **Tier 2** |            x0.5 |
| **Tier 3** |            x0.6 |
| **Tier 4** |           x0.75 |
| **Tier 5** |            x0.9 |
| **Tier 6** |            x1.2 |

## 🔨 Refinement & Attributes

### Item Refinement

![Refinement Crystal](/files/RELo85LhYRDF09FbcMa0)

Refinement boosts an item's raw **Attack** and **Defense** up to **+10**.

* **Success:** Increases Item Level by 1 and Item Power by 5.
* **Failure:** Lowers Item Level by 1.
* **Success Rate:** Starts at **100%** (from +0 to +1) and decreases by 10% per level down to **10%** (from +9 to +10).

### Attribute Rerolls

![Highroller Orb](/files/7stuiPpytbC3K6hjUGtW)

The **Highroller Orb** can be used on equipment with rarity greater than 1. It preserves attribute types (such as Attack and Crit) while rerolling their numeric values.


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