# Collections
### Overview
Collections are used to obtain [Monsters](/zomland-whitepaper/game-overview/monsters.md) . To get the monster you need to collect 10 zombies from the same collection. As a result, the features of the monster (health, attack, intellect) and its ZML tokens price equals the sum of all the features of the collected zombies multiply by modifier that depends on final rarity.
> *Note: Speed for monster always equal 1.*
The chance to get some rarity of the Monster card will be selected based on the rarity of the collected zombies. For mint Monster you need to pay ZML tokens - required amount depends on selected zombie Card Rarity:
* **Common**: +50 ZML.
* **UnCommon**: +100 ZML.
* **Rare**: +200 ZML.
* **Epic**: +400 ZML.
💡 **Monster Card Rarity calculation example:**
Zombies you’ve been collected 10 zombies: - **`6`** Common - **`3`** Uncommon - **`1`** Rare**.**
As result, your chance to get monster**:** - Common **`60%`** - Uncommon **`30%`** - Rare **`10%`**
Total ZML amount for mint this Monster**:** (`6` *x* 50) + (`3` *x* 100) + (`1` *x* 200) = `800` ZML
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