diff --git a/PKHeX.Core/Legality/Encounters/Templates/Gen8a/EncounterSlot8a.cs b/PKHeX.Core/Legality/Encounters/Templates/Gen8a/EncounterSlot8a.cs
index c38e60b4c..3e3ec8101 100644
--- a/PKHeX.Core/Legality/Encounters/Templates/Gen8a/EncounterSlot8a.cs
+++ b/PKHeX.Core/Legality/Encounters/Templates/Gen8a/EncounterSlot8a.cs
@@ -8,7 +8,7 @@ namespace PKHeX.Core;
 /// <param name="AlphaType">0=Never, 1=Random, 2=Guaranteed</param>
 /// <param name="FlawlessIVCount"></param>
 public sealed record EncounterSlot8a(EncounterArea8a Parent, ushort Species, byte Form, byte LevelMin, byte LevelMax, byte AlphaType, byte FlawlessIVCount, Gender Gender)
-    : IEncounterable, IEncounterMatch, IEncounterConvertible<PA8>, IAlphaReadOnly, IMasteryInitialMoveShop8, IFlawlessIVCount
+    : IEncounterable, IEncounterMatch, IEncounterConvertible<PA8>, IAlphaReadOnly, IMasteryInitialMoveShop8, IFlawlessIVCount, ISeedCorrelation64<PKM>
 {
     public byte Generation => 8;
     public EntityContext Context => EntityContext.Gen8a;
@@ -233,4 +233,21 @@ public sealed record EncounterSlot8a(EncounterArea8a Parent, ushort Species, byt
         return p.IsValidMasteredEncounter(moves, learn, mastery, level, alpha, allowAlphaPurchaseBug);
     }
     #endregion
+
+    public bool TryGetSeed(PKM pk, out ulong seed)
+    {
+        // Check if it matches any single-roll seed.
+        var pi = PersonalTable.LA[Species, Form];
+        var param = GetParams(pi) with { RollCount = 1 };
+        var solver = new XoroMachineSkip(pk.EncryptionConstant, pk.PID);
+        foreach (var s in solver)
+        {
+            if (!Overworld8aRNG.Verify(pk, s, param))
+                continue;
+            seed = s;
+            return true;
+        }
+        seed = default;
+        return false;
+    }
 }
diff --git a/PKHeX.Core/Legality/Encounters/Templates/Gen8a/EncounterStatic8a.cs b/PKHeX.Core/Legality/Encounters/Templates/Gen8a/EncounterStatic8a.cs
index 612e75749..f0b586d39 100644
--- a/PKHeX.Core/Legality/Encounters/Templates/Gen8a/EncounterStatic8a.cs
+++ b/PKHeX.Core/Legality/Encounters/Templates/Gen8a/EncounterStatic8a.cs
@@ -6,7 +6,9 @@ namespace PKHeX.Core;
 /// Generation 8 Static Encounter
 /// </summary>
 public sealed record EncounterStatic8a
-    : IEncounterable, IEncounterMatch, IEncounterConvertible<PA8>, IAlphaReadOnly, IMasteryInitialMoveShop8, IScaledSizeReadOnly, IMoveset, IFlawlessIVCount, IFatefulEncounterReadOnly, IFixedGender
+    : IEncounterable, IEncounterMatch, IEncounterConvertible<PA8>, ISeedCorrelation64<PKM>,
+        IAlphaReadOnly, IMasteryInitialMoveShop8, IScaledSizeReadOnly,
+        IMoveset, IFlawlessIVCount, IFatefulEncounterReadOnly, IFixedGender
 {
     public byte Generation => 8;
     public EntityContext Context => EntityContext.Gen8a;
@@ -283,4 +285,20 @@ public sealed record EncounterStatic8a
         return p.IsValidMasteredEncounter(moves, learn, mastery, level, alpha, allowAlphaPurchaseBug);
     }
     #endregion
+
+    public bool TryGetSeed(PKM pk, out ulong seed)
+    {
+        // Check if it matches any single-roll seed.
+        var param = GetParams();
+        var solver = new XoroMachineSkip(pk.EncryptionConstant, pk.PID);
+        foreach (var s in solver)
+        {
+            if (!Overworld8aRNG.Verify(pk, s, param, HasFixedHeight, HasFixedWeight))
+                continue;
+            seed = s;
+            return true;
+        }
+        seed = default;
+        return false;
+    }
 }
diff --git a/PKHeX.Core/Legality/RNG/Methods/Gen8a/Overworld8aRNG.cs b/PKHeX.Core/Legality/RNG/Methods/Gen8a/Overworld8aRNG.cs
index d6e45aaa1..f8bffe86c 100644
--- a/PKHeX.Core/Legality/RNG/Methods/Gen8a/Overworld8aRNG.cs
+++ b/PKHeX.Core/Legality/RNG/Methods/Gen8a/Overworld8aRNG.cs
@@ -201,7 +201,8 @@ public static class Overworld8aRNG
         _ => Shiny.Never,
     };
 
-    public static bool Verify(PKM pk, ulong seed, in OverworldParam8a para)
+    public static bool Verify(PKM pk, ulong seed, in OverworldParam8a para,
+        bool isFixedH = false, bool isFixedW = false)
     {
         var rand = new Xoroshiro128Plus(seed);
         var ec = (uint)rand.NextInt();
@@ -290,9 +291,9 @@ public static class Overworld8aRNG
 
         if (pk is IScaledSize s)
         {
-            if (s.HeightScalar != height)
+            if (!isFixedH && s.HeightScalar != height)
                 return false;
-            if (s.WeightScalar != weight)
+            if (!isFixedW && s.WeightScalar != weight)
                 return false;
         }
 
diff --git a/PKHeX.Core/Legality/RNG/PIDIV.cs b/PKHeX.Core/Legality/RNG/PIDIV.cs
index 43eb4771e..cb71236b7 100644
--- a/PKHeX.Core/Legality/RNG/PIDIV.cs
+++ b/PKHeX.Core/Legality/RNG/PIDIV.cs
@@ -52,7 +52,7 @@ public readonly struct PIDIV
 #endif
     public bool IsClassicMethod() => Type.IsClassicMethod();
 
-    public bool IsSeed64() => Type is PIDType.Raid8;
+    public bool IsSeed64() => Type is PIDType.Xoroshiro;
 
     public PIDIV AsEncounteredVia(LeadSeed condition) => this with { Lead = condition.Lead, EncounterSeed = condition.Seed };
 }
diff --git a/PKHeX.Core/Legality/RNG/PIDType.cs b/PKHeX.Core/Legality/RNG/PIDType.cs
index 08b21af60..48cf8b7cf 100644
--- a/PKHeX.Core/Legality/RNG/PIDType.cs
+++ b/PKHeX.Core/Legality/RNG/PIDType.cs
@@ -172,10 +172,10 @@ public enum PIDType : byte
     Pokewalker,
 
     /// <summary>
-    /// Generation 8 Raid PID
+    /// Generation 8 Xoroshiro correlation
     /// </summary>
     /// <remarks>Formulaic based on PID &amp; EC values from a 64bit-seed.</remarks>
-    Raid8,
+    Xoroshiro,
 
     /// <summary>
     /// Generation 8 Overworld Spawn PID
diff --git a/PKHeX.Core/Legality/Verifiers/MiscVerifier.cs b/PKHeX.Core/Legality/Verifiers/MiscVerifier.cs
index 344dc24fe..13ab6c129 100644
--- a/PKHeX.Core/Legality/Verifiers/MiscVerifier.cs
+++ b/PKHeX.Core/Legality/Verifiers/MiscVerifier.cs
@@ -130,11 +130,8 @@ public sealed class MiscVerifier : Verifier
         else if (enc is ISeedCorrelation64<PKM> s64)
         {
             if (s64.TryGetSeed(pk, out var seed))
-                data.Info.PIDIV = new PIDIV(PIDType.Raid8, seed);
-        }
-        else if (enc is IMasteryInitialMoveShop8 m)
-        {
-            if (!m.IsForcedMasteryCorrect(pk))
+                data.Info.PIDIV = new PIDIV(PIDType.Xoroshiro, seed);
+            if (enc is IMasteryInitialMoveShop8 m && !m.IsForcedMasteryCorrect(pk))
                 data.AddLine(GetInvalid(LEncMasteryInitial));
         }