add unfinished potions set

Potions are designed as a different on field resource to diversify
game play.
Potions may be used offensively or defensively.
They are a on field equivalent to spells with harder timing restrictions,
public information but artifact synergies and thus should be cheaper
than their spell equivalent.
In particular because unused spells can be used to generate resource
by discarding two cards. Played potions are "dead" until they are used.

1 files changed, 10 insertions, 2 deletions

diff --git a/rules/en/rules.md b/rules/en/rules.md
index 762535ef..813836f7 100644
--- a/rules/en/rules.md
+++ b/rules/en/rules.md
@@ -381,8 +381,16 @@ Additional States a **Unit** is in are represented by putting appropriate State
 * **Equipments** are **artifacts**
 * **Equipments** have a **durability** value
 * **Equipments** with a **durability** < 1 are *destroyed*
-* **Equipments** can be *equiped* by **Units**
+* **Equipments** can be *equipped* by **Units**
 * An **equipment** forms a pile on the *equipped* **Unit**
 * An **equipment** can be played normally or already *equipped* by the next played **unit**
-* Whenever a **pile** containing an equiped is *dropped* reduce its **durability** by 1
+* Reduce the **durability** of each **equipment** in a **pile** by one if the **pile** gets *dropped*
 * An adjacent **Unit** can *equip* an **equipment** using either a **move** or **attack action**
+
+
+## Potions
+
+* **Potions** are **artifacts**
+* **Potions** are **equipments**
+* **Potions** have **durability** 1
+* An *equipped* **potion** may be used as either a **move** or **atack action** of the *equipped* **unit**