# Level up

### **Levels**

Prophet NFTs can be leveled up by spending $NDT, and their earning powers increases. Initial Level of all NFT is 1, and each NFT can level up until level =10. 

### Cost of Level up

Cost of each level up is 10% of the current Earning Power 

### Cooldown time

After each level up, there is cooldown time of 2 hours.

### Level Up Limitations

There is no limit to the number of prophets that can be leveled up at the same time.

### Earning Power increase

At each level up, earning power increases by

* 10% from level 1 to 4
* 20% from level 4 to 5
* 10% from level 5 to 9
* 30% from level 9 to 10

Accordingly, level multiplier is given by the following table;

| Level | Level Multiplier |
| ----- | ---------------- |
| 1     | 1.00             |
| 2     | 1.10             |
| 3     | 1.21             |
| 4     | 1.33             |
| 5     | 1.60             |
| 6     | 1.76             |
| 7     | 1.93             |
| 8     | 2.13             |
| 9     | 2.34             |
| 10    | 3.04             |

The background of NFTs changes at level 5 and 10. Note that class of NFT stays the same after level-up, as well as mint score.

The background of NFTs are upgraded as per below.

**Level 1-4 Normal** 

![](/files/YOP46mInMlzDD0hDERhN)

**Level 5-9 Silver** 

![](/files/ehjDqaaBLo36uFLhNy7m)

**Level 10 Gold**

![](/files/CZ3ntXgi4TNlQp6exKHc)


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