From 6a60b8772c00140eea906bf6eebbf7da81c077b2 Mon Sep 17 00:00:00 2001
From: Kurt <kaphotics@gmail.com>
Date: Sun, 4 Dec 2016 15:55:17 -0800
Subject: [PATCH] Ban Gastrodon West prior to bank release

Closes #578
---
 PKHeX/Legality/Checks.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/PKHeX/Legality/Checks.cs b/PKHeX/Legality/Checks.cs
index d052cc551..0bed0435f 100644
--- a/PKHeX/Legality/Checks.cs
+++ b/PKHeX/Legality/Checks.cs
@@ -1599,6 +1599,9 @@ private void verifyG7PreBank()
                     AddLine(Severity.Invalid, "Form not obtainable prior to Bank Release.", CheckIdentifier.Special);
             }
 
+            if (new[] {422,423}.Contains(pkm.Species) && pkm.AltForm != 1) // East Sea only
+                AddLine(Severity.Invalid, "Form not obtainable prior to Bank Release.", CheckIdentifier.Special);
+
             if (Legal.Bank_NoHidden7.Contains(pkm.Species) && pkm.AbilityNumber == 4)
                 AddLine(Severity.Invalid, "Ability not obtainable prior to Bank Release.", CheckIdentifier.Special);
         }