# Skeleton NFTs
Skeleton NFTs are the foundation of every playable character in QUBIT. They’re not just collectibles—they’re the raw, class-bound blueprints from which all fighters are forged.
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The lifecycle of a Skeleton NFT can be broken down into two stages:
### Stage 1: Packed (mystery state)
Skeletons are initially acquired in the form of Skeleton Packs—mystery boxes that contain a single, randomly generated Skeleton.
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At this point:
* The contents (class and rarity) are hidden
* Players can choose to keep the pack sealed or open it to reveal what’s inside
* Packs are tradable on the marketplace as unopened collectibles
{% hint style="info" %}
Opening a pack is a one-time action. Once revealed, the Skeleton inside is permanently bound to your wallet.
{% endhint %}
### Stage 2: Revealed (Ready for Creation)
Once a pack is opened, the Skeleton NFT is revealed. Now you can:
* See its assigned class (e.g. Pyro, Frost, Arcane…)
* See its rarity tier, which affects base stats and long-term progression
* Use it as the base material to forge a Character NFT using the [QUBIT Creator Tool](/qubit-whitepaper/qubit-creator-tool.md)
At this stage, the Skeleton becomes a creative asset. You can either:
* Keep it and create+mint a unique character
* Sell or trade it on the [marketplace](/qubit-whitepaper/nft-trading-and-marketplace.md) as a revealed, un-forged Skeleton
{% hint style="warning" %}
Once a Skeleton is used to create+mint a character, it is consumed and cannot be reused. One Skeleton = One Character
{% endhint %}
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