# Overview
To begin, you need **Smelly Koala Battle NFT Cards** to form your battle deck and farm.
Only official **Smelly Koala Battle NFT Cards** with the **HP** and **SF** values printed on the card face are eligible.
**HP** stands for **Hit Point**, which is the amount of damage from baddies your team can take before it faints.
**SF** stands for **Stench Factor**, which is the base damage your team can deal to baddies. It also represents the number of trees you can plant when you start your koala farm.
In this **Drunken Koala legendary card** example, this koala has a **HP** of 200 and **SF** of 50. This card packs a punch and allows for 50 trees in koala farm too!
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