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# Collecting and Upgrading Units

<figure><img src="/files/kv307lUfL45dA1APBCQN" alt=""><figcaption><p>Units &#x26; Units NFT Utility Scheme</p></figcaption></figure>

### Collect Units

Players can acquire in-game Units through several key methods:

* **Basic Units**: Each new player receives a base set of non-tradable in-game Units, allowing them to join battles immediately.
* **In-game Rewards**: Earn additional Units through in-game chests (Novice Bounty Board, Survival Mode Mystery Box, Battle Pass, Trophy Road, and Castles (only for Lord NFT stakers)).
* **Treasure Hunt (Sale) & Marketplace**: Acquire exclusive Units through periodic NFT sales or buy from other players.
* **Special Events**: Participate in special events and in-game activities for unique Unit rewards.

### Upgrade Units

Players can upgrade a Unit card by leveling up and ranking up.

#### Units Level-up

<figure><img src="/files/DHl6qXqWhCcjxtTry0ER" alt="" width="375"><figcaption><p>Level-up</p></figcaption></figure>

Level-up is an in-game action that increases the Unit's stats. Level-up requires unit Shards and Gold. A Unit level is capped by its rank. Higher ranks have higher-level caps.

#### Units Rank-up

<figure><img src="/files/Uznr1YqwclzOnw1JJhqc" alt="" width="375"><figcaption><p>Rank-up</p></figcaption></figure>

Rank-up is an action that boosts a Unit’s rank, increasing its stats by 10% per rank. Rank-ups also raise the Unit’s level cap based on its rarity

There are 6 ranks available for Units:

* ⚪ Common
* 🟢 Uncommon&#x20;
* 🔵 Rare
* 🟣 Epic
* 🟡 Legendary
* 💎 Mystic

\
Rank-up requires merging multiple Units, using either in-game Units or Unit NFTs, along with a rank-up fee in $WF tokens. This process burns the Units used, resulting in a new, higher-ranked in-game Unit, regardless of whether NFTs were used in the rank-up. Players can then use this upgraded Unit in the game or mint it on-chain to turn it into an NFT. All in-game Units and NFT Units involved in the merge are burned in the process.

[See Economy for more details >](/whitepaper/economy.md)

Higher Unit Ranks (Epic, Legendary, and Mystic) grant Perks to Units — special abilities that enhance their power. For more information about Perks check: [Perks](/whitepaper/gameplay/action-phase/perks.md).

### Units Synergy

A powerful Deck is not simply about high-ranking Units; synergy plays a vital role. Each Unit has strengths and vulnerabilities, making strategic pairings crucial. As new Units are introduced and seasonal updates are released, players must adapt to shifting metas and explore creative combinations to find optimal setups. This dynamic approach keeps battles engaging and encourages players to continuously refine their strategies.


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