> For the complete documentation index, see [llms.txt](https://docs.monsterra.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.monsterra.io/gameplay/rune.md).
# Rune
## What is Rune?
Rune is a new function that increases the power of mongen.
Each mongen can equip up to 6 runes at the same time.
If equipped with the correct rune type and location, mongen will activate a runeword
Runeword when equipped activates special effects.
The more rare the runes in the runeword, the stronger the effects of the runeword.
{% hint style="warning" %}
~~Rune and~~ Only Runeword effect is unaffected to troops except stats (,,,) change.
{% endhint %}
## Rune Upgrade
Runes are divided into several rarity.
Runes with higher rarity will have stronger stats
To upgrade runes to higher rarity, players need the same amount of runes, sMAG and MSTR
Rune Rarity
Number of Copy Required
sMAG Cost
MSTR Cost
Unequip Cost
Co
1
12,250
-
450
Uc
2
37,500
5
4,100
Ra
3
60,000
25
12,500
Ep
4
90,000
60
20,000
Le
-
-
-
30,000
## Equip and Remove Runes
Mongen can equip up to 6 runes regardless of level or rarity.
When the player no longer wants to use runes, the player can use sMAG to remove the runes from the mongen and return them to the inventory.