diff --git a/custom_formats/Banned Groups.yml b/custom_formats/Banned Groups.yml
index 331e2cb..2562782 100644
--- a/custom_formats/Banned Groups.yml	
+++ b/custom_formats/Banned Groups.yml	
@@ -40,10 +40,10 @@ conditions:
   required: false
   type: release_group
 - name: BTM
-  type: release_group
-  required: false
   negate: false
   pattern: BTM
+  required: false
+  type: release_group
 - name: CLASSiCALHD
   negate: false
   pattern: CLASSiCALHD
@@ -94,6 +94,11 @@ conditions:
   pattern: LAMA
   required: false
   type: release_group
+- name: MgB
+  type: release_group
+  required: false
+  negate: false
+  pattern: MgB
 - name: NAHOM
   negate: false
   pattern: NAHOM
diff --git a/regex_patterns/MgB.yml b/regex_patterns/MgB.yml
new file mode 100644
index 0000000..e30e721
--- /dev/null
+++ b/regex_patterns/MgB.yml
@@ -0,0 +1,7 @@
+name: MgB
+pattern: (?<=^|[\s.-])MgB\b
+description: Banned for Mislabeled 2160p WEBRips
+tags:
+- Release Group
+- WEB-DL
+tests: []