diff --git a/src/AcDream.Core.Net/Messages/CreateObject.cs b/src/AcDream.Core.Net/Messages/CreateObject.cs
index f0d2b65d..35122e79 100644
--- a/src/AcDream.Core.Net/Messages/CreateObject.cs
+++ b/src/AcDream.Core.Net/Messages/CreateObject.cs
@@ -156,7 +156,12 @@ public static class CreateObject
         // IconComposer.GetIcon already composites these layers in the correct
         // retail order (underlay / base / overlay+tint / effect).
         uint IconOverlayId = 0,
-        uint IconUnderlayId = 0);
+        uint IconUnderlayId = 0,
+        // D.5.2 (2026-06-17): UiEffects bitfield (weenieFlags 0x80) — drives the icon's
+        // effect recolor (Magical=0x1 … Nether=0x1000). The ONLY wire path for the effect
+        // state (PropertyInt.UiEffects=18 has no [AssessmentProperty] → not in appraise).
+        // Previously read + discarded at the UiEffects skip. 0 = no effect.
+        uint UiEffects = 0);
 
     /// <summary>
     /// The relevant subset of the server-sent <c>MovementData</c> /
@@ -571,7 +576,7 @@ public static class CreateObject
             //   0x00000010 Usable            u32               KEPT
             //   0x00000020 UseRadius         f32               KEPT
             //   0x00080000 TargetType        u32               (skip)
-            //   0x00000080 UiEffects         u32               (skip)
+            //   0x00000080 UiEffects         u32               CAPTURE (D.5.2)
             //   0x00000200 CombatUse         sbyte/1 byte      (skip)
             //   0x00000400 Structure         u16               (skip)
             //   0x00000800 MaxStructure      u16               (skip)
@@ -605,6 +610,7 @@ public static class CreateObject
             float? useRadius = null;
             uint iconOverlayId = 0;
             uint iconUnderlayId = 0;
+            uint uiEffects = 0;
             uint weenieFlags2 = 0;
             try
             {
@@ -666,10 +672,10 @@ public static class CreateObject
                     if (body.Length - pos < 4) throw new FormatException("trunc TargetType");
                     pos += 4;
                 }
-                if ((weenieFlags & 0x00000080u) != 0)         // UiEffects u32
+                if ((weenieFlags & 0x00000080u) != 0)         // UiEffects u32  ← CAPTURE
                 {
                     if (body.Length - pos < 4) throw new FormatException("trunc UiEffects");
-                    pos += 4;
+                    uiEffects = ReadU32(body, ref pos);
                 }
                 if ((weenieFlags & 0x00000200u) != 0)         // CombatUse sbyte (1 byte)
                 {
@@ -808,7 +814,8 @@ public static class CreateObject
                 friction, elasticity,
                 IconId: iconId,
                 Useability: useability, UseRadius: useRadius,
-                IconOverlayId: iconOverlayId, IconUnderlayId: iconUnderlayId);
+                IconOverlayId: iconOverlayId, IconUnderlayId: iconUnderlayId,
+                UiEffects: uiEffects);
 
             // Local helper: if we ran out of fields past PhysicsData, still
             // return the useful prefix (guid/position/setup/animParts/textures/palettes/scale/motion).
diff --git a/tests/AcDream.Core.Net.Tests/Messages/CreateObjectTests.cs b/tests/AcDream.Core.Net.Tests/Messages/CreateObjectTests.cs
index ce9ea4a1..f760f98b 100644
--- a/tests/AcDream.Core.Net.Tests/Messages/CreateObjectTests.cs
+++ b/tests/AcDream.Core.Net.Tests/Messages/CreateObjectTests.cs
@@ -332,6 +332,52 @@ public sealed class CreateObjectTests
         Assert.Equal(0x06004444u, parsed.Value.IconUnderlayId);
     }
 
+    // -----------------------------------------------------------------------
+    // D.5.2 (2026-06-17): UiEffects bitfield (weenieFlags bit 0x80) — captured
+    // instead of skipped. Drives the icon's effect-overlay recolor.
+    // -----------------------------------------------------------------------
+
+    [Fact]
+    public void TryParse_UiEffects_Captured()
+    {
+        // weenieFlags 0x80 = UiEffects; value 0x1 = Magical.
+        byte[] body = BuildMinimalCreateObjectWithWeenieHeader(
+            guid: 0x50000010u, name: "MagicWand", itemType: (uint)ItemType.Caster,
+            weenieFlags: 0x80u, uiEffects: 0x1u);
+
+        var parsed = CreateObject.TryParse(body);
+
+        Assert.NotNull(parsed);
+        Assert.Equal(0x1u, parsed!.Value.UiEffects);
+    }
+
+    [Fact]
+    public void TryParse_UiEffectsThenIconOverlay_BothCaptured()
+    {
+        // Verifies the cursor still reaches IconOverlay after reading (not skipping) UiEffects.
+        byte[] body = BuildMinimalCreateObjectWithWeenieHeader(
+            guid: 0x50000011u, name: "GlowSword", itemType: (uint)ItemType.MeleeWeapon,
+            weenieFlags: 0x80u | 0x40000000u, uiEffects: 0x4u, iconOverlayId: 0x1ABCu);
+
+        var parsed = CreateObject.TryParse(body);
+
+        Assert.NotNull(parsed);
+        Assert.Equal(0x4u, parsed!.Value.UiEffects);
+        Assert.Equal(0x06001ABCu, parsed.Value.IconOverlayId);
+    }
+
+    [Fact]
+    public void TryParse_NoUiEffectsBit_LeavesUiEffectsZero()
+    {
+        byte[] body = BuildMinimalCreateObjectWithWeenieHeader(
+            guid: 0x50000012u, name: "PlainRock", itemType: (uint)ItemType.Misc, weenieFlags: 0u);
+
+        var parsed = CreateObject.TryParse(body);
+
+        Assert.NotNull(parsed);
+        Assert.Equal(0u, parsed!.Value.UiEffects);
+    }
+
     private static byte[] BuildMinimalCreateObjectWithWeenieHeader(
         uint guid,
         string name,
@@ -341,6 +387,7 @@ public sealed class CreateObjectTests
         uint weenieFlags = 0,
         uint weenieFlags2 = 0,
         uint iconId = 0,
+        uint uiEffects = 0,
         uint? value = null,
         uint? useability = null,
         float? useRadius = null,
@@ -400,7 +447,7 @@ public sealed class CreateObjectTests
             bytes.AddRange(tmp.ToArray());
         }
         if ((weenieFlags & 0x00080000u) != 0) WriteU32(bytes, 0);  // TargetType u32
-        if ((weenieFlags & 0x00000080u) != 0) WriteU32(bytes, 0);  // UiEffects u32
+        if ((weenieFlags & 0x00000080u) != 0) WriteU32(bytes, uiEffects);  // UiEffects u32
         if ((weenieFlags & 0x00000200u) != 0) bytes.Add(0);        // CombatUse sbyte/1 byte
         if ((weenieFlags & 0x00000400u) != 0) WriteU16(bytes, structure ?? 0);  // Structure u16
         if ((weenieFlags & 0x00000800u) != 0) WriteU16(bytes, maxStructure ?? 0); // MaxStructure u16