> For the complete documentation index, see [llms.txt](https://theslapkinggame.gitbook.io/internal-wiki/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://theslapkinggame.gitbook.io/internal-wiki/the-game/improve-rarity.md).

# Improve Rarity

You have the possibility to improve the rarity of an SLAP.

To do so, you need 3 SLAP of the same rarity.

Among them, 1 will be upgraded to a higher rarity, and the other 2 will be burned.

If they are Common, then it will become Rare.

If they are Rare, then it will become Epic.

Epic cannot be upgraded to Legendary.

But, you have a 3% chance of getting an extra upgrade.

So upgrade a Common to Epic, or a Rare to Legendary!

The cost in SPN varies depending on the rarity of the SPN being fed:

Common: $20 in SPN

Rare: $30 in SPN

On top of that, 0.05 BNB is added as fee (see  for more information)

And 50% of these fees will be used to buyback SPN and fulfil the contract that handles fights rewards.

All SPN used for Improve Rarity are BURNED.