This is a guide for hidden seals in Hyrule Warriors: Age of Calamity for the Nintendo Switch. Learn how to increase the max weapon level and unlock the hidden seals of your weapon. A list of all hidden seals and their weapons is also included!

How to Unlock Hidden Seals

Increase Max Weapon Level

Hidden seals are unlocked after upgrading a weapon to level 25 and 30 through weapon fusion. To reach these levels, you must first gain the ability to increase the max weapon level by completing A Monumental Undertaking and The Legendary Blacksmith Quests.

A Monumental Undertaking

How to Unlock
Clear the Battle: Relentless as a Waterfall
Reward
Gain Ability to Increase Max Weapon Level
Required Materials
Moblin Fang ×30	Moblin Trophy ×20	Luminous Stone ×3	Stone Talus Trophy ×1	Lynel Horn ×5

The Legendary Blacksmith

How to Unlock
Complete the Quest: Tactics for Small Foes
Reward
Gain Ability to Increase Max Weapon Level
Required Materials
Ethereal Stone ×2	Lynel Trophy ×4	Stone Talus Trophy ×1	Hinox Trophy ×4	Molduga Trophy ×1

Replay challenges with a fast clear time and a high weapon drop to upgrade your weapon to level 30.

For more information on weapon farming, see the link below.
Weapon Farming Guide: How to Get Weapons Quickly

Upgrade Weapon to the New Max Level

After increasing the max weapon level, continue upgrading the weapon until you reach the new level cap and unlock a hidden seal.

These seals have their own slots and will not require any of the slots you have acquired from the previous weapon levels.

Each weapon type has 2 fixed hidden seals that will be revealed upon reaching the required weapon levels. Some of the hidden seals are normally found on weapons obtained from Battles and Challenges but there are hidden seals that are unique to a weapon type and more powerful than most weapon skills.

How to Raise Max Weapon Level

List of Hidden Seals

Hidden Seal	Weapons
Ancient-Part Drop Rate	・ Ancient Battle Axe ・ Ancient Battle Axe+ ・ Ancient Battle Axe++ ・ Battle-Tested Screw ・ Faithful Kodachi ・ Guardian Spear ・ Guardian Spear+ ・ Guardian Spear++ ・ Guardian Sword ・ Guardian Sword+ ・ Guardian Sword++
Attack Range	・ Boat Oar ・ Boko Spear ・ Bokoblin Arm ・ Boomerang ・ Double Axe ・ Gerudo Claymore ・ Guardian Flail ・ Knight's Broadsword ・ Knight's Claymore ・ Lucky Ladle ・ Maracas ・ Moblin Spear ・ Raw Rock Roast ・ Royal Halberd ・ Soldier’s Spear ・ Soup Ladle ・ Spiked Moblin Club ・ Windcleaver
Attack Speed	・ Bands of Truth ・ Boat Oar ・ Boomerang ・ Enhanced Lizal Spear ・ Fishing Harpoon ・ Forked Lizal Spear ・ Knight's Halberd ・ Lizal Boomerang ・ Lizal Spear ・ Lizalfos Arm ・ Lynel Spear ・ Royal Broadsword ・ Soldier's Claymore ・ Spiked Moblin Club ・ Traveler's Sword ・ Woodcutter's Axe ・ Wooden Bow ・ Wooden Mop
Auto-Critical Hit after Combos	・ Ancient Bladed Flail ・ Lynel Spear ・ Mighty Lynel Crusher ・ Royal Broadsword ・ Royal Guard's Claymore ・ Silverscale Spear ・ Spiked Boko Spear ・ Spiked Moblin Spear ・ Traveler's Spear ・ Vicious Sickle
Battle EXP	・ Ancient Memory Part ・ Blessed Screw ・ Eightfold Blade ・ Farming Hoe ・ Soldier's Broadsword ・ Training Sword
Battlefield-Specific Material Drop Rate	・ Lizal Forked Boomerang ・ Lizal Tri-Boomerang ・ Lucky Ladle ・ Soup Ladle
Chance of Landing Shockwave	・ Bridle of the Seven ・ Demon Carver ・ Dragonbone Boko Bat ・ Great Eagle Bow ・ Master Cycle Hunter ・ Mighty Lynel Sword
Chance to KO Weak Enemies	・ Battle-Tested Gear ・ Cursed Bone Shard ・ Royal Claymore ・ Savage Lynel Spear ・ Savage Lynel Sword
Damage at 30% Hearts or Less	・ Ancient Memory Part ・ Eightfold Longblade ・ Lynel Crusher ・ Lynel Sword ・ Royal Guard's Claymore ・ Tree Branch ・ Zora Longsword
Damage at Full Hearts	・ Master Sword ・ Royal Guard's Spear ・ Royal Guard's Sword ・ Sacred Bow ・ Savage Lynel Spear
Damage from Enemies	・ Ancient Battle Axe ・ Edge of Duality ・ Guardian Spear ・ Guardian Sword ・ Moblin Arm
Damage per 100 KOs	・ Shakalaka Maracas ・ Soldier's Bow
Damage Reflected When Guarding	・ Fortified Flail ・ Gear of the Protector ・ Lynel Sword ・ Mighty Lynel Spear ・ Mighty Lynel Sword ・ Moonlight Scimitar ・ Rock Roast Flambé ・ Royal Claymore ・ Wooden Bow
Damage to Foes with Status Effects	・ Bands of Truth ・ Falcon Bow ・ Luxurious Bangles ・ Traveler's Claymore
Damage to Locked-On Target	・ Ancient Overclock Unit ・ Battle-Tested Gear ・ Ceremonial Trident ・ Dragonbone Boko Spear ・ Eightfold Blade ・ Extravagant Bangles ・ Gear of the Protector ・ Moblin Club ・ Royal Halberd ・ Savage Lynel Crusher ・ Scimitar of the Seven ・ Zora Sword
Dash-Attack Damage	・ Boulder Breaker ・ Bridle of the Seven ・ Cobble Crusher ・ Eightfold Longblade ・ Fishing Harpoon ・ Gerudo Bridle ・ Lizal Spear ・ Throwing Spear ・ Woodcutter's Axe
Detects Nearby Chests	・ Ancient Overclock Unit ・ Ancient Power Boost ・ Benevolent Spring ・ Blessed Screw ・ Dazzling Bangles ・ Forest Dweller's Spear ・ Forest Dweller's Sword ・ Maracas ・ Shaka Maracas ・ Tree Branch
Detects Nearby Koroks	・ Ancient Overclock Unit ・ Benevolent Spring ・ Forest Dweller's Spear ・ Forest Dweller's Sword ・ Maracas ・ Shaka Maracas ・ Tree Branch
Flurry Rush Damage	・ Gerudo Bridle ・ Wooden Mop
Fusion Material EXP	・ Boko Club ・ Dragonbone Moblin Spear ・ Gerudo Claymore ・ Lizalfos Arm ・ Moblin Arm ・ Moonlight Scimitar ・ Serpentine Spear ・ Silverscale Spear ・ Soldier's Bow ・ Spiked Moblin Spear ・ Starlight Bridle
Heal a Percentage of Damage Dealt	・ Bow of Light ・ Heart of Annihilation ・ Master Sword ・ Savage Lynel Crusher
Heal by Defeating Enemies	・ Boulder Breaker ・ Devoted Kodachi ・ Mighty Lynel Crusher ・ Shakalaka Maracas ・ Soldier’s Spear
Healing-Item Drop Rate	・ Sacred Bow ・ Spiked Boko Bat
Healing-Item Effect	・ Royal Guard's Sword ・ Sealing Bow
High-Resell Weapon	・ Bokoblin Arm ・ Dragonbone Moblin Spear ・ Medium-Rare Rock Roast ・ Spiked Boko Club ・ Swallow Bow ・ Windcleaver ・ Zora Spear
Improves Quality of Found Weapons	・ Bands of Enlightenment
Increased Blupee Encounters	・ Dazzling Bangles ・ Forest Dweller's Sword ・ Monk's Bands
Material Drop Rate from Grass	・ Farmer's Pitchfork ・ Farming Hoe
Midair-Attack Damage	・ Enhanced Lizal Spear ・ Falcon Bow ・ Feathered Edge ・ Great Eagle Bow ・ Serpentine Spear ・ Traveler's Bow ・ Traveler's Spear ・ Zora Longsword ・ Zora Spear
Mineral Drop Rate	・ Cobble Crusher ・ Drillshaft ・ Iron Sledgehammer ・ Luxurious Bangles ・ Stone Smasher
Monster-Part Drop Rate	・ Boko Bat ・ Boko Club ・ Boko Spear ・ Dragonbone Boko Bat ・ Dragonbone Boko Club ・ Dragonbone Boko Spear ・ Dragonbone Moblin Club ・ Lizal Boomerang ・ Lizal Forked Boomerang ・ Lizal Tri-Boomerang ・ Spiked Boko Bat ・ Spiked Boko Club ・ Spiked Boko Spear
Perfect-Dodge Timing Window	・ Bands of Enlightenment ・ Drillshaft ・ Master Cycle ・ Moblin Spear ・ Soldier's Broadsword ・ Soldier's Claymore ・ Training Sword
Perfect-Guard Chance When Guarding	・ Savage Lynel Sword
Rare-Material Drop Rate	・ Dragonbone Moblin Club
Reduced Damage from Fire	・ Ancient Battle Axe+
Reduced Damage from Ice	・ Guardian Sword+
Reduced Damage from Lightning	・ Gerudo Scimitar ・ Guardian Spear+
Regular-Attack Damage	・ Ancient Bladed Flail ・ Battle-Tested Screw ・ Battle-Tested Spring ・ Benevolent Spring ・ Ceremonial Trident ・ Double Axe ・ Feathered Spear ・ Guardian Flail ・ Kakariko Kodachi ・ Knight's Halberd ・ Malevolent Spine ・ Master Cycle ・ Master Cycle Sentinel ・ Starlight Bridle ・ Swallow Bow ・ Traveler's Bow ・ Traveler's Claymore
Resistance to All Status Effects	・ Ancient Battle Axe++ ・ Bow of Light ・ Guardian Spear++ ・ Guardian Sword++ ・ Malevolent Spine ・ Master Cycle Sentinel
Sensor-Registered Material Drop Rate	・ Faithful Kodachi ・ Farmer's Pitchfork
Special-Attack Charge Rate	・ Ancient Power Boost ・ Devoted Kodachi ・ Feathered Spear ・ Forest Dweller's Spear ・ Knight's Broadsword ・ Knight's Claymore ・ Lightscale Trident ・ Sealing Bow ・ Traveler's Sword ・ Vicious Sickle ・ Zora Sword
Special-Attack Damage	・ Cursed Bone Shard ・ Kakariko Kodachi ・ Mighty Lynel Spear
Strong-Attack Damage	・ Battle-Tested Spring ・ Boko Bat ・ Demon Carver ・ Dragonbone Boko Club ・ Edge of Duality ・ Extravagant Bangles ・ Forked Lizal Spear ・ Fortified Flail ・ Gerudo Spear ・ Heart of Annihilation ・ Lynel Crusher ・ Master Cycle Hunter ・ Medium-Rare Rock Roast ・ Moblin Club ・ Monk's Bands ・ Prototype Ancient Short Sword ・ Rock Roast Flambé ・ Scimitar of the Seven

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