# Heroes and Items

There are primarily four types of assets in BOB Arena: crystals, heroes, items, and shards.

### Crystal

Crystals are flexible to buy, users can select the amount of BNB per crystal and the total amount of crystals they wish to buy. This makes crystals very versatile for any kind of investment, from small to big amounts.

* Crystals cannot be sold in the marketplace
* Each player can select the amount of BNB for each crystal they wish to spend, from 0.1 BNB up to 2 BNB per crystal. This BNB price, will then determine the total power of the hero when the crystal is opened
* Players can forge multiple crystals at once
* Crystals can also be obtained as drops from arenas.
* Each crystal can be opened and will transform into a hero
* Each hero level has a different drop chance of being created!

### Heroes

***After a crystal is opened, a new hero will be created. There are 8 types of heroes. Each hero has a different level, and each level has a limit on the amount of BNB it can earn in arenas.***

**Example**: ***User A buys 3 crystal for 1 BNB and finds a level 4 hero. The hero will have the combat power of 1 \* 2.9 = 2.9 BNB***

At the moment of the launch, heroes can:

* Participate in arenas to fight skeletons
* Earn BNB (each one has a limit specified in the image below)
* Earn multiple combinations of Items through arena
* Be sold in the marketplace

<figure><img src="https://1747257664-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fyv63dOL1D6uQ8oefN7D2%2Fuploads%2FStMnyi7OuKVxLEB331ay%2Fnewpan4%20.png?alt=media&#x26;token=0793da21-e17d-4505-ba95-f9b16a62fd01" alt=""><figcaption><p>List of heroes with their earning potential</p></figcaption></figure>

## &#x20;**ITEMS**

After an arena is concluded, players may find items and/or crystals

**Merger**: combines 2 shards to create a new crystal with base price of 0.2 BNB

**S-Merger**: combines 3 shards to create  a new crystal with base price of 0.4 BNB

**G-Crystal**: Green crystals allow you to upgrade your heroes without having a chance to lose them forever, read the Open/Upgrade section for details.

**Items can:**&#x20;

* Be found exclusively in arenas&#x20;
* Be found in any combination, for example 2 Merger, 0 S-Merger, 1 G-Crystal, based on the level of the hero
* Be sold for other players to use them

<figure><img src="https://1747257664-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fyv63dOL1D6uQ8oefN7D2%2Fuploads%2FbbVUtCzFc1RZZGSO68RF%2FScreenshot%202023-11-27%20092554.png?alt=media&#x26;token=0de4e1c6-4e1d-4c72-9d76-cc0e93996ec3" alt=""><figcaption><p>Profile Panel to use Items</p></figcaption></figure>

## &#x20;**SHARDS**

Shards are the remains of a destroyed or lost hero.&#x20;

* Whenever a hero completes the arena, earns ETH and items, it will disappear and transform into a shard
* If a hero is upgraded and the upgrade fails, the hero will become a shard instead of evolving
* Shards cannot be sold and are soul-bound to the player
