diff --git a/sql/updates/world/4.3.4/2022_01_05_01_world.sql b/sql/updates/world/4.3.4/2022_01_05_01_world.sql
new file mode 100644
index 00000000000..33512030816
--- /dev/null
+++ b/sql/updates/world/4.3.4/2022_01_05_01_world.sql
@@ -0,0 +1,9 @@
+DELETE FROM `spell_script_names` WHERE `ScriptName`= 'spell_dk_dancing_rune_weapon';
+INSERT INTO `spell_script_names` (`spell_id`, `ScriptName`) VALUES
+(49028, 'spell_dk_dancing_rune_weapon');
+
+UPDATE `creature_template` SET `ScriptName`= 'npc_pet_dk_rune_weapon', `flags_extra`= 0 WHERE `entry`= 27893;
+
+DELETE FROM `spell_proc` WHERE `SpellId`= 49028;
+INSERT INTO `spell_proc` (`SpellId`, `SpellFamilyName`, `SpellTypeMask`, `SpellPhaseMask`) VALUES
+(49028, 15, 1, 2);
diff --git a/src/server/scripts/Pet/pet_dk.cpp b/src/server/scripts/Pet/pet_dk.cpp
index 3cc03557bbb..a7edcaa9369 100644
--- a/src/server/scripts/Pet/pet_dk.cpp
+++ b/src/server/scripts/Pet/pet_dk.cpp
@@ -293,10 +293,35 @@ private:
     bool _readyToAttack;
 };
 
+enum DancingRuneWeapon
+{
+    SPELL_COPY_WEAPON_1                 = 63416,
+    SPELL_DANCING_RUNE_WEAPON_VISUAL    = 53160,
+    SPELL_COPY_WEAPON_2                 = 63418
+};
+
+struct npc_pet_dk_rune_weapon : public AggressorAI
+{
+    npc_pet_dk_rune_weapon(Creature* creature) : AggressorAI(creature) { }
+
+    void IsSummonedBy(Unit* summoner) override
+    {
+        if (!summoner)
+            return;
+
+        me->SetDisplayId(me->GetCreatureTemplate()->Modelid2);
+        for (uint32 spellId : { SPELL_COPY_WEAPON_1, SPELL_COPY_WEAPON_2 })
+            DoCast(summoner, spellId, true);
+
+        DoCastSelf(SPELL_DANCING_RUNE_WEAPON_VISUAL);
+    }
+};
+
 void AddSC_deathknight_pet_scripts()
 {
     new npc_pet_dk_ebon_gargoyle();
     new npc_pet_dk_guardian();
     RegisterCreatureAI(npc_pet_dk_army_of_the_dead_ghoul);
     RegisterSpellScript(spell_pet_ghoul_dummy_ability);
+    RegisterCreatureAI(npc_pet_dk_rune_weapon);
 }
diff --git a/src/server/scripts/Spells/spell_dk.cpp b/src/server/scripts/Spells/spell_dk.cpp
index 4f3211ea360..ccad8c0027e 100644
--- a/src/server/scripts/Spells/spell_dk.cpp
+++ b/src/server/scripts/Spells/spell_dk.cpp
@@ -47,6 +47,7 @@ enum DeathKnightSpells
     SPELL_DK_BLOOD_TAP                          = 45529,
     SPELL_DK_BUTCHERY                           = 50163,
     SPELL_DK_CORPSE_EXPLOSION_TRIGGERED         = 43999,
+    SPELL_DK_DANCING_RUNE_WEAPON_PARRY_BONUS    = 81256,
     SPELL_DK_DARK_TRANSFORMATION                = 63560,
     SPELL_DK_DARK_TRANSFORMATION_DUMMY          = 93426,
     SPELL_DK_DEATH_AND_DECAY_DAMAGE             = 52212,
@@ -61,6 +62,7 @@ enum DeathKnightSpells
     SPELL_DK_DEATH_STRIKE_HEAL                  = 45470,
     SPELL_DK_DEATH_STRIKE_ENABLER               = 89832,
     SPELL_DK_EBON_PLAGUE                        = 65142,
+    SPELL_DK_FLAMING_RUNE_WEAPON                = 101162,
     SPELL_DK_FLAMING_TORRENT                    = 99000,
     SPELL_DK_FROST_FEVER                        = 55095,
     SPELL_DK_FROST_PRESENCE                     = 48266,
@@ -76,6 +78,7 @@ enum DeathKnightSpells
     SPELL_DK_ITEM_SIGIL_VENGEFUL_HEART          = 64962,
     SPELL_DK_ITEM_T8_MELEE_4P_BONUS             = 64736,
     SPELL_DK_ITEM_T11_DPS_4P_BONUS              = 90459,
+    SPELL_DK_ITEM_T12_BLOOD_4P_BONUS            = 98966,
     SPELL_DK_MASTER_OF_GHOULS                   = 52143,
     SPELL_DK_OBLITERATE                         = 49020,
     SPELL_DK_OBLITERATE_OFFHAND                 = 66198,
@@ -271,6 +274,11 @@ class spell_dk_death_and_decay : public AuraScript
 // 47541 - Death Coil
 class spell_dk_death_coil : public SpellScript
 {
+    bool Load() override
+    {
+        return GetCaster()->IsPlayer();
+    }
+
     bool Validate(SpellInfo const* /*spell*/) override
     {
         return ValidateSpellInfo(
@@ -1719,6 +1727,60 @@ class spell_dk_smoldering_rune : public AuraScript
     }
 };
 
+// 49028 - Dancing Rune Weapon
+class spell_dk_dancing_rune_weapon : public AuraScript
+{
+    bool Validate(SpellInfo const* /*spellInfo*/) override
+    {
+        return ValidateSpellInfo(
+            {
+                SPELL_DK_ITEM_T12_BLOOD_4P_BONUS,
+                SPELL_DK_FLAMING_RUNE_WEAPON,
+                SPELL_DK_DANCING_RUNE_WEAPON_PARRY_BONUS
+            });
+    }
+
+    void HandleApply(AuraEffect const* aurEff, AuraEffectHandleModes /*mode*/)
+    {
+        Unit* target = GetTarget();
+        target->CastSpell(nullptr, SPELL_DK_DANCING_RUNE_WEAPON_PARRY_BONUS, aurEff);
+    }
+
+    void HandleEffectRemove(AuraEffect const* aurEff, AuraEffectHandleModes /*mode*/)
+    {
+        Unit* target = GetTarget();
+        if (AuraEffect const* t12Bonus = target->GetAuraEffect(SPELL_DK_ITEM_T12_BLOOD_4P_BONUS, EFFECT_0))
+            target->CastSpell(nullptr, SPELL_DK_FLAMING_RUNE_WEAPON, CastSpellExtraArgs(aurEff).AddSpellBP0(t12Bonus->GetAmount()));
+
+        target->RemoveAurasDueToSpell(SPELL_DK_DANCING_RUNE_WEAPON_PARRY_BONUS);
+    }
+
+    bool CheckProc(ProcEventInfo& eventInfo)
+    {
+        return eventInfo.GetProcTarget() && eventInfo.GetProcSpell() && eventInfo.GetProcSpell()->GetCaster() == GetTarget();
+    }
+
+    void HandleProc(AuraEffect const* /*aurEff*/, ProcEventInfo& eventInfo)
+    {
+        PreventDefaultAction();
+        std::list<Creature*> runeWeapon;
+        GetTarget()->GetAllMinionsByEntry(runeWeapon, GetSpellInfo()->Effects[EFFECT_0].MiscValue);
+        if (runeWeapon.empty())
+            return;
+
+        for (Creature* weapon : runeWeapon)
+            weapon->CastSpell(eventInfo.GetProcTarget(), eventInfo.GetSpellInfo()->Id, true);
+    }
+
+    void Register() override
+    {
+        AfterEffectApply.Register(&spell_dk_dancing_rune_weapon::HandleApply, EFFECT_1, SPELL_AURA_DUMMY, AURA_EFFECT_HANDLE_REAL);
+        AfterEffectRemove.Register(&spell_dk_dancing_rune_weapon::HandleEffectRemove, EFFECT_1, SPELL_AURA_DUMMY, AURA_EFFECT_HANDLE_REAL);
+        DoCheckProc.Register(&spell_dk_dancing_rune_weapon::CheckProc);
+        OnEffectProc.Register(&spell_dk_dancing_rune_weapon::HandleProc, EFFECT_1, SPELL_AURA_DUMMY);
+    }
+};
+
 void AddSC_deathknight_spell_scripts()
 {
     RegisterSpellScript(spell_dk_anti_magic_shell);
@@ -1729,6 +1791,7 @@ void AddSC_deathknight_spell_scripts()
     RegisterSpellScript(spell_dk_blood_rites);
     RegisterSpellScript(spell_dk_butchery);
     RegisterSpellScript(spell_dk_crimson_scourge);
+    RegisterSpellScript(spell_dk_dancing_rune_weapon);
     RegisterSpellScript(spell_dk_dark_transformation);
     RegisterSpellScript(spell_dk_dark_transformation_aura);
     RegisterSpellScript(spell_dk_death_and_decay);