Implement ShearedNub.cs as well as tweak the syntax in NormalNub.cs

osu.Game/Graphics/UserInterface/NormalNub.cs

@@ -18,9 +18,8 @@ namespace osu.Game.Graphics.UserInterface
             Size = new Vector2(EXPANDED_SIZE, HEIGHT);
         }
 
-        protected override Container CreateNubContainer()
-        {
-            return new CircularContainer
+        protected override Container CreateNubContainer() =>
+            new CircularContainer
             {
                 BorderColour = Colour4.White,
                 BorderThickness = BORDER_WIDTH,
@@ -29,6 +28,5 @@ namespace osu.Game.Graphics.UserInterface
                 Anchor = Anchor.TopCentre,
                 Origin = Anchor.TopCentre,
             };
-        }
     }
 }

osu.Game/Graphics/UserInterface/Nub.cs

@@ -22,6 +22,10 @@ namespace osu.Game.Graphics.UserInterface
         private readonly Box fill;
         private readonly Container main;
 
+        /// <summary>
+        ///  Implements the shape for the nub, allowing for any type of container to be used.
+        /// </summary>
+        /// <returns></returns>
         protected abstract Container CreateNubContainer();
 
         protected Nub()

osu.Game/Graphics/UserInterface/ShearedNub.cs

@@ -0,0 +1,27 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osuTK;
+
+namespace osu.Game.Graphics.UserInterface
+{
+    public partial class ShearedNub : Nub
+    {
+        public static readonly Vector2 SHEAR = new Vector2(0.15f, 0);
+
+        protected override Container CreateNubContainer() =>
+            new Container
+            {
+                Shear = SHEAR,
+                BorderColour = Colour4.White,
+                BorderThickness = BORDER_WIDTH,
+                Masking = true,
+                CornerRadius = 5,
+                RelativeSizeAxes = Axes.Both,
+                Anchor = Anchor.TopCentre,
+                Origin = Anchor.TopCentre,
+            };
+    }
+}