diff --git a/data/sql/updates/pending_db_world/rev_1785678970043008400.sql b/data/sql/updates/pending_db_world/rev_1785678970043008400.sql
new file mode 100644
index 0000000000..4733706dfd
--- /dev/null
+++ b/data/sql/updates/pending_db_world/rev_1785678970043008400.sql
@@ -0,0 +1,3 @@
+--
+DELETE FROM `spell_script_names` WHERE `ScriptName` IN ('spell_hodir_shatter_chest', 'spell_hodir_shatter_chest_timer_aura');
+INSERT INTO `spell_script_names` (`spell_id`, `ScriptName`) VALUES (65272, 'spell_hodir_shatter_chest_timer_aura');
diff --git a/src/server/scripts/Northrend/Ulduar/Ulduar/boss_hodir.cpp b/src/server/scripts/Northrend/Ulduar/Ulduar/boss_hodir.cpp
index 71ccf0fbc8..201d2cd0a3 100644
--- a/src/server/scripts/Northrend/Ulduar/Ulduar/boss_hodir.cpp
+++ b/src/server/scripts/Northrend/Ulduar/Ulduar/boss_hodir.cpp
@@ -46,6 +46,7 @@ enum HodirSpellData
     SPELL_SAFE_AREA                     = 65705,
     SPELL_SAFE_AREA_TRIGGERED           = 62464,
     SPELL_SHATTER_CHEST                 = 62501,
+    SPELL_SHATTER_CHEST_TIMER           = 65272,
 
     SPELL_ICICLE_BOSS_AURA              = 62227,
     SPELL_ICICLE_TBBA                   = 63545,
@@ -123,8 +124,6 @@ enum HodirEvents
     EVENT_FREEZE                        = 4,
     EVENT_SMALL_ICICLES_ENABLE          = 5,
     EVENT_HARD_MODE_MISSED              = 6,
-    EVENT_DESPAWN_CHEST                 = 7,
-    EVENT_FAIL_HM                       = 8,
 
     EVENT_TRY_FREE_HELPER               = 10,
     EVENT_PRIEST_DISPELL_MAGIC          = 11,
@@ -258,12 +257,13 @@ struct boss_hodir : public BossAI
     void JustEngagedWith(Unit*  /*who*/) override
     {
         me->CastSpell(me, SPELL_BITING_COLD_BOSS_AURA, true);
+        // Hard mode timer: periodic dummy aura whose tick shatters the Rare Cache (sniffed on retail)
+        me->CastSpell(me, SPELL_SHATTER_CHEST_TIMER, true);
         SmallIcicles(true);
         events.Reset();
         events.ScheduleEvent(EVENT_FLASH_FREEZE, 48s, 49s);
         events.ScheduleEvent(EVENT_FREEZE, 17s, 20s);
         events.ScheduleEvent(EVENT_BERSERK, 8min);
-        events.ScheduleEvent(EVENT_HARD_MODE_MISSED, 3min);
         Talk(TEXT_AGGRO);
 
         // Helpers spawn IMMUNE_TO_NPC so idle bosses (e.g. Freya's Ground Tremor, #26330) can't tag
@@ -289,14 +289,13 @@ struct boss_hodir : public BossAI
         {
             switch (action)
             {
-                case EVENT_FAIL_HM:
+                case EVENT_HARD_MODE_MISSED:
+                    Talk(TEXT_HM_MISS);
+                    bAchievCacheRare = false;
                     if (instance)
                     {
                         if (GameObject* go = GetHardmodeChest())
-                        {
-                            go->SetGoState(GO_STATE_ACTIVE);
-                            events.ScheduleEvent(EVENT_DESPAWN_CHEST, 3s);
-                        }
+                            me->CastSpell(go, SPELL_SHATTER_CHEST, false);
                     }
                     break;
             }
@@ -409,21 +408,6 @@ struct boss_hodir : public BossAI
                     Talk(TEXT_BERSERK);
                 }
                 break;
-            case EVENT_HARD_MODE_MISSED:
-                {
-                    Talk(TEXT_HM_MISS);
-                    bAchievCacheRare = false;
-                    if (instance)
-                    {
-                        if (GameObject* go = GetHardmodeChest())
-                            me->CastSpell(go, SPELL_SHATTER_CHEST, false);
-                    }
-                }
-                break;
-            case EVENT_DESPAWN_CHEST:
-                if (instance && instance->GetBossState(BOSS_HODIR) != DONE)
-                    instance->SetData(TYPE_HODIR_HM_FAIL, 0);
-                break;
             case EVENT_FLASH_FREEZE:
                 {
                     std::list<Unit*> targets;
@@ -1225,22 +1209,25 @@ struct npc_ulduar_hodir_mage : public ScriptedAI
     }
 };
 
-class spell_hodir_shatter_chest : public SpellScript
+class spell_hodir_shatter_chest_timer_aura : public AuraScript
 {
-    PrepareSpellScript(spell_hodir_shatter_chest);
+    PrepareAuraScript(spell_hodir_shatter_chest_timer_aura);
 
-    void DestroyWinterCache(SpellEffIndex effIndex)
+    bool Validate(SpellInfo const* /*spellInfo*/) override
     {
-        PreventHitDefaultEffect(effIndex);
+        return ValidateSpellInfo({ SPELL_SHATTER_CHEST });
+    }
 
-        if (Unit* hodir = GetCaster())
-            hodir->GetAI()->DoAction(EVENT_FAIL_HM);
+    void HandleEffectPeriodic(AuraEffect const* /*aurEff*/)
+    {
+        if (Unit* hodir = GetTarget())
+            hodir->GetAI()->DoAction(EVENT_HARD_MODE_MISSED);
     }
 
     void Register() override
     {
-        OnEffectHit += SpellEffectFn(spell_hodir_shatter_chest::DestroyWinterCache, EFFECT_0, SPELL_EFFECT_TRIGGER_MISSILE);
-    };
+        OnEffectPeriodic += AuraEffectPeriodicFn(spell_hodir_shatter_chest_timer_aura::HandleEffectPeriodic, EFFECT_0, SPELL_AURA_PERIODIC_DUMMY);
+    }
 };
 
 class spell_hodir_biting_cold_main_aura : public AuraScript
@@ -1599,7 +1586,7 @@ void AddSC_boss_hodir()
     RegisterUlduarCreatureAI(npc_ulduar_hodir_shaman);
     RegisterUlduarCreatureAI(npc_ulduar_hodir_mage);
 
-    RegisterSpellScript(spell_hodir_shatter_chest);
+    RegisterSpellScript(spell_hodir_shatter_chest_timer_aura);
     RegisterSpellScript(spell_hodir_biting_cold_main_aura);
     RegisterSpellScript(spell_hodir_biting_cold_player_aura);
     RegisterSpellScript(spell_hodir_periodic_icicle);
diff --git a/src/server/scripts/Northrend/Ulduar/Ulduar/instance_ulduar.cpp b/src/server/scripts/Northrend/Ulduar/Ulduar/instance_ulduar.cpp
index c4afe6229e..949ee3242b 100644
--- a/src/server/scripts/Northrend/Ulduar/Ulduar/instance_ulduar.cpp
+++ b/src/server/scripts/Northrend/Ulduar/Ulduar/instance_ulduar.cpp
@@ -326,6 +326,18 @@ public:
             // destory towers
             if (eventId >= EVENT_TOWER_OF_LIFE_DESTROYED && eventId <= EVENT_TOWER_OF_FLAMES_DESTROYED)
                 SetData(eventId, 0);
+            else if (eventId == EVENT_HODIR_SHATTER_CHEST)
+            {
+                if (GameObject* go = GetHodirChest(true))
+                {
+                    go->SetGoState(GO_STATE_ACTIVE);
+                    scheduler.Schedule(3s, [this](TaskContext /*context*/)
+                    {
+                        if (GetBossState(BOSS_HODIR) != DONE)
+                            SetData(TYPE_HODIR_HM_FAIL, 0);
+                    });
+                }
+            }
         }
 
         bool SetBossState(uint32 type, EncounterState state) override
diff --git a/src/server/scripts/Northrend/Ulduar/Ulduar/ulduar.h b/src/server/scripts/Northrend/Ulduar/Ulduar/ulduar.h
index f2f294542a..769bb24b54 100644
--- a/src/server/scripts/Northrend/Ulduar/Ulduar/ulduar.h
+++ b/src/server/scripts/Northrend/Ulduar/Ulduar/ulduar.h
@@ -356,6 +356,9 @@ enum UlduarMisc
     EVENT_TOWER_OF_FLAMES_DESTROYED         = 21033,
     EVENT_TOWER_OF_LIFE_DESTROYED           = 21030,
 
+    // Sent by Shatter Chest (62502), triggered by Hodir's hard mode timer missile (62501)
+    EVENT_HODIR_SHATTER_CHEST               = 20907,
+
     ACTION_LEVIATHAN_REFRESH_TOWERS         = -1,
     ACTION_TOWER_OF_STORM_DESTROYED         = 1,
     ACTION_TOWER_OF_FROST_DESTROYED         = 2,