diff --git a/Legality/Checks.cs b/Legality/Checks.cs
index c5dbd40e0..6474ee733 100644
--- a/Legality/Checks.cs
+++ b/Legality/Checks.cs
@@ -175,6 +175,9 @@ private LegalityCheck verifyEVs()
         }
         private LegalityCheck verifyIVs()
         {
+            if (EncounterType == typeof(EncounterStatic) && (EncounterMatch as EncounterStatic)?.IV3 == true)
+                if (pk6.IVs.Count(iv => iv == 31) < 3)
+                    return new LegalityCheck(Severity.Invalid, "Should have at least 3 IVs = 31.");
             if (pk6.IVs.Sum() == 0)
                 return new LegalityCheck(Severity.Fishy, "All IVs are zero.");
             if (pk6.IVs[0] < 30 && pk6.IVs.All(iv => pk6.IVs[0] == iv))
diff --git a/Legality/Data.cs b/Legality/Data.cs
index f41741c22..e7afe9d45 100644
--- a/Legality/Data.cs
+++ b/Legality/Data.cs
@@ -188,6 +188,7 @@ public class EncounterStatic
         public int Ball = 4; // Gift Only
         public GameVersion Version = GameVersion.Any;
         public int[] IVs = {-1, -1, -1, -1, -1, -1};
+        public bool IV3;
         public int[] Contest = {0, 0, 0, 0, 0, 0};
     }
     public class EncounterTrade
diff --git a/Legality/Tables.cs b/Legality/Tables.cs
index fd15337c0..62b0e2428 100644
--- a/Legality/Tables.cs
+++ b/Legality/Tables.cs
@@ -628,15 +628,15 @@ public static partial class Legal
             new EncounterStatic { Species = 569, Level = 38, Location = 142 }, // Garbodor
             new EncounterStatic { Species = 479, Level = 38, Location = 142 }, // Rotom
             
-            new EncounterStatic { Species = 716, Level = 50, Location = 138, Version = GameVersion.X, Shiny = false }, // Xerneas
-            new EncounterStatic { Species = 717, Level = 50, Location = 138, Version = GameVersion.Y, Shiny = false }, // Yveltal
-            new EncounterStatic { Species = 718, Level = 70, Location = 140, Shiny = false }, // Zygarde
+            new EncounterStatic { Species = 716, Level = 50, Location = 138, Version = GameVersion.X, Shiny = false, IV3 = true }, // Xerneas
+            new EncounterStatic { Species = 717, Level = 50, Location = 138, Version = GameVersion.Y, Shiny = false, IV3 = true }, // Yveltal
+            new EncounterStatic { Species = 718, Level = 70, Location = 140, Shiny = false, IV3 = true }, // Zygarde
             
-            new EncounterStatic { Species = 150, Level = 70, Location = 168, Shiny = false }, // Mewtwo
+            new EncounterStatic { Species = 150, Level = 70, Location = 168, Shiny = false, IV3 = true }, // Mewtwo
 
-            new EncounterStatic { Species = 144, Level = 70, Location = 146, Shiny = false }, // Articuno
-            new EncounterStatic { Species = 145, Level = 70, Location = 146, Shiny = false }, // Zapdos
-            new EncounterStatic { Species = 146, Level = 70, Location = 146, Shiny = false }, // Moltres
+            new EncounterStatic { Species = 144, Level = 70, Location = 146, Shiny = false, IV3 = true }, // Articuno
+            new EncounterStatic { Species = 145, Level = 70, Location = 146, Shiny = false, IV3 = true }, // Zapdos
+            new EncounterStatic { Species = 146, Level = 70, Location = 146, Shiny = false, IV3 = true }, // Moltres
         };
         private static readonly EncounterStatic[] Encounter_AO =
         {
@@ -669,56 +669,56 @@ public static partial class Legal
             new EncounterStatic { Species = 319, Level = 40, Location = 318, Gender = 1, Ability = 1, Nature = Nature.Adamant, Gift = true }, // Sharpedo
             new EncounterStatic { Species = 323, Level = 40, Location = 318, Gender = 1, Ability = 1, Nature = Nature.Quiet, Gift = true }, // Camerupt
             
-            new EncounterStatic { Species = 380, Level = 30, Location = 320, Version = GameVersion.AS, Ability = 1, Gift = true }, // Latias
-            new EncounterStatic { Species = 381, Level = 30, Location = 320, Version = GameVersion.OR, Ability = 1, Gift = true }, // Latios
+            new EncounterStatic { Species = 380, Level = 30, Location = 320, Version = GameVersion.AS, Ability = 1, Gift = true, IV3 = true }, // Latias
+            new EncounterStatic { Species = 381, Level = 30, Location = 320, Version = GameVersion.OR, Ability = 1, Gift = true, IV3 = true }, // Latios
 
-            new EncounterStatic { Species = 382, Level = 45, Location = 296, Version = GameVersion.AS, Shiny = false }, // Kyogre
-            new EncounterStatic { Species = 383, Level = 45, Location = 296, Version = GameVersion.OR, Shiny = false }, // Groudon
-            new EncounterStatic { Species = 384, Level = 70, Location = 316, Shiny = false }, // Rayquaza
-            new EncounterStatic { Species = 386, Level = 80, Location = 316, Shiny = false }, // Deoxys
+            new EncounterStatic { Species = 382, Level = 45, Location = 296, Version = GameVersion.AS, Shiny = false, IV3 = true }, // Kyogre
+            new EncounterStatic { Species = 383, Level = 45, Location = 296, Version = GameVersion.OR, Shiny = false, IV3 = true }, // Groudon
+            new EncounterStatic { Species = 384, Level = 70, Location = 316, Shiny = false, IV3 = true }, // Rayquaza
+            new EncounterStatic { Species = 386, Level = 80, Location = 316, Shiny = false, IV3 = true }, // Deoxys
 
-            new EncounterStatic { Species = 377, Level = 40, Location = 278 }, // Regirock
-            new EncounterStatic { Species = 378, Level = 40, Location = 306 }, // Regice
-            new EncounterStatic { Species = 379, Level = 40, Location = 308 }, // Registeel
-            new EncounterStatic { Species = 486, Level = 50, Location = 306 }, // Regigigas
+            new EncounterStatic { Species = 377, Level = 40, Location = 278, IV3 = true }, // Regirock
+            new EncounterStatic { Species = 378, Level = 40, Location = 306, IV3 = true }, // Regice
+            new EncounterStatic { Species = 379, Level = 40, Location = 308, IV3 = true }, // Registeel
+            new EncounterStatic { Species = 486, Level = 50, Location = 306, IV3 = true }, // Regigigas
             
-            new EncounterStatic { Species = 249, Level = 50, Location = 304, Version = GameVersion.AS }, // Lugia
-            new EncounterStatic { Species = 250, Level = 50, Location = 304, Version = GameVersion.OR }, // Ho-oh
+            new EncounterStatic { Species = 249, Level = 50, Location = 304, Version = GameVersion.AS, IV3 = true }, // Lugia
+            new EncounterStatic { Species = 250, Level = 50, Location = 304, Version = GameVersion.OR, IV3 = true }, // Ho-oh
 
-            new EncounterStatic { Species = 483, Level = 50, Location = 348, Version = GameVersion.AS }, // Dialga
-            new EncounterStatic { Species = 484, Level = 50, Location = 348, Version = GameVersion.OR }, // Palia
+            new EncounterStatic { Species = 483, Level = 50, Location = 348, Version = GameVersion.AS, IV3 = true }, // Dialga
+            new EncounterStatic { Species = 484, Level = 50, Location = 348, Version = GameVersion.OR, IV3 = true }, // Palia
 
-            new EncounterStatic { Species = 644, Level = 50, Location = 340, Version = GameVersion.AS }, // Zekrom
-            new EncounterStatic { Species = 643, Level = 50, Location = 340, Version = GameVersion.OR }, // Reshiram
+            new EncounterStatic { Species = 644, Level = 50, Location = 340, Version = GameVersion.AS, IV3 = true }, // Zekrom
+            new EncounterStatic { Species = 643, Level = 50, Location = 340, Version = GameVersion.OR, IV3 = true }, // Reshiram
 
-            new EncounterStatic { Species = 642, Level = 50, Location = 348, Version = GameVersion.AS }, // Thundurus
-            new EncounterStatic { Species = 641, Level = 50, Location = 348, Version = GameVersion.OR }, // Tornadus
+            new EncounterStatic { Species = 642, Level = 50, Location = 348, Version = GameVersion.AS, IV3 = true }, // Thundurus
+            new EncounterStatic { Species = 641, Level = 50, Location = 348, Version = GameVersion.OR, IV3 = true }, // Tornadus
 
-            new EncounterStatic { Species = 485, Level = 50, Location = 312 }, // Heatran
-            new EncounterStatic { Species = 487, Level = 50, Location = 348 }, // Giratina
-            new EncounterStatic { Species = 488, Level = 50, Location = 344 }, // Cresselia
-            new EncounterStatic { Species = 645, Level = 50, Location = 348 }, // Landorus
-            new EncounterStatic { Species = 646, Level = 50, Location = 342 }, // Kyurem
+            new EncounterStatic { Species = 485, Level = 50, Location = 312, IV3 = true }, // Heatran
+            new EncounterStatic { Species = 487, Level = 50, Location = 348, IV3 = true }, // Giratina
+            new EncounterStatic { Species = 488, Level = 50, Location = 344, IV3 = true }, // Cresselia
+            new EncounterStatic { Species = 645, Level = 50, Location = 348, IV3 = true }, // Landorus
+            new EncounterStatic { Species = 646, Level = 50, Location = 342, IV3 = true }, // Kyurem
             
-            new EncounterStatic { Species = 243, Level = 50, Location = 334 }, // Raikou
-            new EncounterStatic { Species = 244, Level = 50, Location = 334 }, // Entei
-            new EncounterStatic { Species = 245, Level = 50, Location = 334 }, // Suicune
+            new EncounterStatic { Species = 243, Level = 50, Location = 334, IV3 = true }, // Raikou
+            new EncounterStatic { Species = 244, Level = 50, Location = 334, IV3 = true }, // Entei
+            new EncounterStatic { Species = 245, Level = 50, Location = 334, IV3 = true }, // Suicune
 
-            new EncounterStatic { Species = 480, Level = 50, Location = 338 }, // Uxie
-            new EncounterStatic { Species = 481, Level = 50, Location = 338 }, // Mesprit
-            new EncounterStatic { Species = 482, Level = 50, Location = 338 }, // Azelf
+            new EncounterStatic { Species = 480, Level = 50, Location = 338, IV3 = true }, // Uxie
+            new EncounterStatic { Species = 481, Level = 50, Location = 338, IV3 = true }, // Mesprit
+            new EncounterStatic { Species = 482, Level = 50, Location = 338, IV3 = true }, // Azelf
 
-            new EncounterStatic { Species = 638, Level = 50, Location = 336 }, // Cobalion
-            new EncounterStatic { Species = 639, Level = 50, Location = 336 }, // Terrakion
-            new EncounterStatic { Species = 640, Level = 50, Location = 336 }, // Virizion
+            new EncounterStatic { Species = 638, Level = 50, Location = 336, IV3 = true }, // Cobalion
+            new EncounterStatic { Species = 639, Level = 50, Location = 336, IV3 = true }, // Terrakion
+            new EncounterStatic { Species = 640, Level = 50, Location = 336, IV3 = true }, // Virizion
             
             new EncounterStatic { Species = 352, Level = 30, Location = 240 }, // Kecleon @ Route 119
             new EncounterStatic { Species = 352, Level = 30, Location = 242 }, // Kecleon @ Route 120
             new EncounterStatic { Species = 352, Level = 40, Location = 176 }, // Kecleon @ Lavaridge
             new EncounterStatic { Species = 352, Level = 45, Location = 196 }, // Kecleon @ Mossdeep City
 
-            new EncounterStatic { Species = 381, Level = 30, Location = 320, Version = GameVersion.AS }, // Latios
-            new EncounterStatic { Species = 380, Level = 30, Location = 320, Version = GameVersion.OR }, // Latias
+            new EncounterStatic { Species = 381, Level = 30, Location = 320, Version = GameVersion.AS, IV3 = true }, // Latios
+            new EncounterStatic { Species = 380, Level = 30, Location = 320, Version = GameVersion.OR, IV3 = true }, // Latias
             
             new EncounterStatic { Species = 101, Level = 40, Location = 292, Version = GameVersion.AS }, // Electrode
             new EncounterStatic { Species = 101, Level = 40, Location = 314, Version = GameVersion.OR }, // Electrode