# Units

Every card that is not a Summoner is classified as a Unit. While Summoners generally buff or debuff teams, Units are the foot soldiers of battle - taking damage and directly engaging with your opponent’s team. After selecting a Summoner for battle, you must select a team comprised of Units from the available elements. Your Units will fill the *Your Monsters* slots as indicated by the green box below.

<figure><img src="/files/A3mEILUmvP9lYm4kqmSJ" alt=""><figcaption></figcaption></figure>

All units have strengths and weaknesses. While some are useful for many situations, others are more niche and will only be called forth to play certain roles.

### **The components of Units include:**

* [Rarity](https://docs.splinterlands.com/cards/card-rarities): The scarcity and relative strength of cards.
  * *There are four rarities: Common, Rare, Epic, and Legendary.*
* [Mana Cost](https://docs.splinterlands.com/cards/card-stats/mana-cost): The numerical amount of Mana required to call a Unit to battle.
* [Abilities](https://docs.splinterlands.com/cards/card-stats/abilities): Special skills that Units or Summoners possess.
* [Element](https://docs.splinterlands.com/cards/card-stats/splinter): Units belong to one or two specific Elements (Fire, Water, Earth, Life, Death, or Dragon) or are Neutral.
* [Stats](https://docs.splinterlands.com/cards/card-stats): The numerical indicators showing Speed, Strength of Attack, Health, and Armor
* [Card Level & Base Card Experience](https://docs.splinterlands.com/cards/combining-cards): The strength of a card can be increased by combining copies of that same card into it.

<figure><img src="/files/syM7avajSFfHG28adhCJ" alt=""><figcaption><p><a href="https://next.splinterlands.com/card-detail/618/regular/12?tab=for-rent"><em>Infernal Firestorm</em></a> <em>is an Epic Fire Unit</em></p></figcaption></figure>


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