diff --git a/src/naxx40Scripts/custom_scripts_40.cpp b/src/naxx40Scripts/custom_scripts_40.cpp
new file mode 100644
index 0000000..b6f59b0
--- /dev/null
+++ b/src/naxx40Scripts/custom_scripts_40.cpp
@@ -0,0 +1,122 @@
+#include "Player.h"
+#include "ScriptMgr.h"
+#include "ScriptedCreature.h"
+#include "SpellAuraEffects.h"
+#include "SpellScript.h"
+#include "naxxramas.h"
+
+class NaxxPlayerScript : public PlayerScript
+{
+public:
+    NaxxPlayerScript() : PlayerScript("NaxxPlayerScript") { }
+
+    void OnPlayerBeforeChooseGraveyard(Player* player, TeamId /*teamId*/, bool /*nearCorpse*/, uint32& graveyardOverride) override
+    {
+        if (player->GetMapId() == MAP_NAXX && player->GetMap()->GetSpawnMode() == RAID_DIFFICULTY_10MAN_HEROIC)
+        {
+            graveyardOverride = NAXX40_GRAVEYARD;
+        }
+    }
+};
+
+class naxx_northrend_entrance : public AreaTriggerScript
+{
+public:
+    naxx_northrend_entrance() : AreaTriggerScript("naxx_northrend_entrance") { }
+
+    bool OnTrigger(Player* player, AreaTrigger const* areaTrigger) override
+    {
+        // Do not allow entrance to Naxx 40 from Northrend
+        // Change 10 man heroic to regular 10 man, as when 10 man heroic is not available
+        Difficulty diff = player->GetGroup() ? player->GetGroup()->GetDifficulty(true) : player->GetDifficulty(true);
+        if (diff == RAID_DIFFICULTY_10MAN_HEROIC)
+        {
+            player->SetRaidDifficulty(RAID_DIFFICULTY_10MAN_NORMAL);
+        }
+        switch (areaTrigger->entry)
+        {
+            // Naxx 10 and 25 entrances
+            case 5191:
+                player->TeleportTo(533, 3005.68f, -3447.77f, 293.93f, 4.65f);
+                break;
+            case 5192:
+                player->TeleportTo(533, 3019.34f, -3434.36f, 293.99f, 6.27f);
+                break;
+            case 5193:
+                player->TeleportTo(533, 3005.9f, -3420.58f, 294.11f, 1.58f);
+                break;
+            case 5194:
+                player->TeleportTo(533, 2992.5f, -3434.42f, 293.94f, 3.13f);
+                break;
+        }
+        return true;
+    }
+};
+
+class naxx_exit_trigger : public AreaTriggerScript
+{
+public:
+    naxx_exit_trigger() : AreaTriggerScript("naxx_exit_trigger") { }
+
+    bool OnTrigger(Player* player, AreaTrigger const* areaTrigger) override
+    {
+        if (player->GetMap()->GetSpawnMode() == RAID_DIFFICULTY_10MAN_HEROIC)
+        {
+            // Naxx 40 cannot be exited via portals, as in Classic
+            return false;
+        }
+        switch (areaTrigger->entry)
+        {
+            // Naxx 10 and 25 exits
+            case 5196:
+                player->TeleportTo(571, 3679.25f, -1278.58f, 243.55f, 2.39f);
+                break;
+            case 5197:
+                player->TeleportTo(571, 3679.03f, -1259.68f, 243.55f, 3.98f);
+                break;
+            case 5198:
+                player->TeleportTo(571, 3661.14f, -1279.55f, 243.55f, 0.82f);
+                break;
+            case 5199:
+                player->TeleportTo(571, 3660.01f, -1260.99f, 243.55f, 5.51f);
+                break;
+        }
+        return true;
+    }
+};
+
+class NaxxEntryFlag_AllMapScript : public AllMapScript
+{
+public:
+    NaxxEntryFlag_AllMapScript() : AllMapScript("NaxxEntryFlag_AllMapScript") { }
+
+    void OnPlayerEnterAll(Map* map, Player* player) override
+    {
+        if (player->IsGameMaster())
+            return;
+
+        // Check if mapId equals to Naxxramas (mapId: 533)
+        if (map->GetId() != 533)
+            return;
+
+        // Cast on player Naxxramas Entry Flag Trigger DND - Classic (spellID: 29296)
+        if (player->GetQuestStatus(NAXX40_ENTRANCE_FLAG) != QUEST_STATUS_REWARDED)
+        {
+            // Mark player as having entered
+            Quest const* quest = sObjectMgr->GetQuestTemplate(NAXX40_ENTRANCE_FLAG);
+            player->AddQuest(quest, nullptr);
+            player->CompleteQuest(NAXX40_ENTRANCE_FLAG);
+            player->RewardQuest(quest, 0, player, false, false);
+            // Cast on player Naxxramas Entry Flag Trigger DND - Classic (spellID: 29296)
+            player->CastSpell(player, 29296, true); // for visual effect only, possible crash if cast on login
+        }
+    }
+};
+
+void AddSC_custom_scripts_40()
+{
+    new NaxxPlayerScript();
+    new naxx_exit_trigger();
+    new naxx_northrend_entrance();
+    new NaxxEntryFlag_AllMapScript();
+}