diff --git a/squirrelbattle/entities/items.py b/squirrelbattle/entities/items.py
index 9719e3a..5564cb0 100644
--- a/squirrelbattle/entities/items.py
+++ b/squirrelbattle/entities/items.py
@@ -225,9 +225,28 @@ class Sword(Weapon):
     """
     A basic weapon
     """
-    def __init__(self, name: str = "sword", price: int = 20, *args, **kwargs):
+    strength: int
+
+    def __init__(self, name: str = "sword", price: int = 20, strength: int = 3,
+                 *args, **kwargs):
         super().__init__(name=name, price=price, *args, **kwargs)
         self.name = name
+        self.strength = strength
+
+    def equip(self) -> None:
+        """
+        When a sword is equipped, the player gains strength.
+        """
+        super().equip()
+        self.held_by.strength += self.strength
+
+    def unequip(self) -> None:
+        """
+        Remove the strength earned by the sword.
+        :return:
+        """
+        super().unequip()
+        self.held_by.strength -= self.strength
 
 
 class BodySnatchPotion(Item):