introduce new boss typeboss

1 files changed, 13 insertions, 6 deletions

diff --git a/rules/en/rules.md b/rules/en/rules.md
index c48aae46..6fd3e3b1 100644
--- a/rules/en/rules.md
+++ b/rules/en/rules.md
@@ -203,12 +203,13 @@ While you control an untapped permanent or have a playable card in hand
   * A set of cards they belong to
   * A unique name
   * A card type:
-    * **[Spells](#spells)**
-    * **[Units](#units)**
-    * **[Artifacts](#artifacts)**
-    * **[Equipments](#equipments)**
-    * **[Potions](#potions)**
-    * **[Itentions](#intentions)**
+    * **[Spell](#spells)**
+    * **[Unit](#units)**
+    * **[Boss](#boss)**
+    * **[Artifact](#artifacts)**
+    * **[Equipment](#equipments)**
+    * **[Potion](#potions)**
+    * **[Itention](#intentions)**
 * All cards have during the game:
   * An **owner**: The player from which's store the card originated
   * A **controller**: The player currently controlling the card
@@ -381,6 +382,12 @@ Additional States a **unit** is in are represented by putting appropriate marker
 * When a *warded* **unit** is dealt damage prevent that damage and remove that much **ward** marks from it
 * Damage is always prevented completely independent of how many **ward** marks are on the *warded* **unit**
 
+# Boss
+
+* A **boss** is a unit
+* It can not be *destroyed* by effects that say so (e. g. Die!)
+* The **boss** type is used to differentiate special units in cooperative game modes
+
 # Push [X]
 
 * `X` can be neglected if it is 1