diff --git a/plugins/eve-plugin-fields/GameCult.Eve.PluginFields.csproj b/plugins/eve-plugin-fields/GameCult.Eve.PluginFields.csproj
index 9a4fd45..cbfbfb3 100644
--- a/plugins/eve-plugin-fields/GameCult.Eve.PluginFields.csproj
+++ b/plugins/eve-plugin-fields/GameCult.Eve.PluginFields.csproj
@@ -6,7 +6,7 @@
     <Description>Runtime-neutral C# contracts for gamecult.fields documents.</Description>
     <CultLibRoot Condition="'$(CultLibRoot)' == ''">$(MSBuildThisFileDirectory)..\..\..\CultLib</CultLibRoot>
     <PackageId>GameCult.Eve.PluginFields</PackageId>
-    <Version>0.2.2</Version>
+    <Version>0.2.3</Version>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/plugins/eve-plugin-fields/test/plugin.test.mjs b/plugins/eve-plugin-fields/test/plugin.test.mjs
index eb56dd1..85df1b7 100644
--- a/plugins/eve-plugin-fields/test/plugin.test.mjs
+++ b/plugins/eve-plugin-fields/test/plugin.test.mjs
@@ -50,6 +50,7 @@ test("publishes a runtime-neutral Unity contract package", () => {
   assert.match(contracts, /interface IEveFieldsSplatsDocument/);
   assert.match(contracts, /gamecult\.fields\.splats\.v1/);
   assert.match(contracts, /AnimatedCellNoiseB = 3/);
+  assert.match(contracts, /AnimatedRadialCosine = 4/);
   assert.match(contracts, /AbsoluteValue = 1/);
   assert.doesNotMatch(contracts, /UnityEngine|Aetheria|MessagePack|GameCult\.Caching/);
   assert.match(readFileSync(new URL("../GameCult.Eve.PluginFields.csproj", import.meta.url), "utf8"), /netstandard2\.1/);
diff --git a/plugins/eve-plugin-fields/unity/org.gamecult.eve.plugin-fields/README.md b/plugins/eve-plugin-fields/unity/org.gamecult.eve.plugin-fields/README.md
index eee9130..fabc7f1 100644
--- a/plugins/eve-plugin-fields/unity/org.gamecult.eve.plugin-fields/README.md
+++ b/plugins/eve-plugin-fields/unity/org.gamecult.eve.plugin-fields/README.md
@@ -19,3 +19,10 @@ distance metric is `(length(frac(p) - .5) * 1.5 + .25) *
 max(abs(x) * .866 + y * .5, -y)`. `AbsoluteValue` folds a signed source after
 sampling. Constant offsets remain ordinary constant splats, so source sampling
 and additive composition retain separate ownership.
+
+`AnimatedRadialCosine` is splat-local rather than field-world anchored. It
+evaluates
+`cos(pow(distance01, FrequencyY) * FrequencyX + PhaseX + simulationTimeSeconds * AnimationSpeed)`.
+`FrequencyX` is radial frequency and `FrequencyY` is the positive radial
+exponent. The ordinary splat falloff owns the envelope, which keeps oscillation
+and compact support independently composable.
diff --git a/plugins/eve-plugin-fields/unity/org.gamecult.eve.plugin-fields/Runtime/EveFieldsContracts.cs b/plugins/eve-plugin-fields/unity/org.gamecult.eve.plugin-fields/Runtime/EveFieldsContracts.cs
index 3bf837e..8c712e2 100644
--- a/plugins/eve-plugin-fields/unity/org.gamecult.eve.plugin-fields/Runtime/EveFieldsContracts.cs
+++ b/plugins/eve-plugin-fields/unity/org.gamecult.eve.plugin-fields/Runtime/EveFieldsContracts.cs
@@ -44,6 +44,7 @@ namespace GameCult.Eve.PluginFields
         public const int SimplexNoise = 1;
         public const int AnimatedSimplexNoise = 2;
         public const int AnimatedCellNoiseB = 3;
+        public const int AnimatedRadialCosine = 4;
     }
 
     public static class EveFieldsSplatSourceFlags
diff --git a/plugins/eve-plugin-fields/unity/org.gamecult.eve.plugin-fields/package.json b/plugins/eve-plugin-fields/unity/org.gamecult.eve.plugin-fields/package.json
index 42d2ed2..a985686 100644
--- a/plugins/eve-plugin-fields/unity/org.gamecult.eve.plugin-fields/package.json
+++ b/plugins/eve-plugin-fields/unity/org.gamecult.eve.plugin-fields/package.json
@@ -1,6 +1,6 @@
 {
   "name": "org.gamecult.eve.plugin-fields",
-  "version": "0.2.2",
+  "version": "0.2.3",
   "displayName": "Eve Fields Plugin Contracts",
   "description": "Runtime-neutral C# contracts for gamecult.fields documents.",
   "unity": "2021.3",