Armor of Invulnerability

• Category: Armor (Plate Armor)
• Rarity: Legendary (Requires Attunement)

You have Resistance to Bludgeoning, Piercing, and Slashing damage while you wear this armor.

Metal Shell. You can take a Magic action to give yourself Immunity to Bludgeoning, Piercing, and Slashing damage for 10 minutes or until you are no longer wearing the armor. Once this property is used, it can't be used again until the next dawn.

Tactical Applications

Combat Strategy: Provides unparalleled protection against physical damage with the ability to become completely immune for crucial encounters. Reserve the immunity for the most dangerous physical threats.

Class Synergies:

• Paladins and Fighters: Maximizes survivability for frontline combatants facing multiple physical attackers
• Barbarians: Stacks with rage damage resistance for incredible durability
• Any Class: Transforms traditionally fragile characters into nearly indestructible physical tanks

Build Considerations: Most effective against enemies that rely primarily on weapon attacks. The immunity activation becomes a crucial tactical decision requiring careful timing.

Acquisition Methods

Crafting Requirements: Requires legendary materials, master-level enchantment, and knowledge of invulnerability magic. Estimated cost: 150,000+ gp and access to planar materials.

Common Sources:

• Ancient dragon hoards containing the finest magical equipment
• Vaults of legendary heroes or god-like entities
• Rewards for completing world-threatening quests
• Inheritance from mythical bloodlines or divine champions

Alternative Acquisition: Some deities or archfey might grant such armor to champions undertaking missions of cosmic importance.

Value & Trade

Estimated Value: 200,000-400,000 gp, making it one of the most expensive items in existence. Often considered priceless due to rarity.

Trade Considerations: Rarely available for purchase. More likely to be offered as payment for preventing apocalyptic events or as diplomatic gifts between the most powerful entities.

Character Integration

Roleplay Elements: Wearing such legendary armor marks the character as a figure of mythical importance. The armor itself may have a storied history and recognizable appearance.

Character Concepts:

• Legendary champion chosen by divine forces
• Last survivor of an ancient order of protectors
• Heir to a legendary heroic lineage
• Mortal elevated to near-divine status through great deeds

Adventure Hooks

The Invincible Tyrant: A villain has obtained armor of invulnerability and believes themselves untouchable, requiring creative solutions to defeat them.

The Broken Armor: The armor's magic is failing, sending the party on a quest to legendary smiths or divine forges to repair it.

The Divine Test: A deity offers the armor as a reward for proving worthiness through seemingly impossible trials.

The Cosmic Balance: Using the armor's immunity has unexpected consequences that threaten the fundamental balance of the multiverse.

Variants & Customization

Greater Armor of Invulnerability (Artifact): Provides immunity for longer periods or includes immunity to additional damage types.

Selective Invulnerability Armor (Legendary): Allows choosing which physical damage types to become immune to during activation.

Eternal Invulnerability Armor (Mythic Artifact): Provides permanent immunity to all physical damage but may have severe drawbacks or cosmic consequences.

Specialized Variants:

• Divine Champion's Armor: Includes radiant damage immunity and protection against fiends
• Draconic Invulnerability Armor: Provides energy damage resistances along with physical immunity
• Planar Protector Armor: Immunity extends to force damage and certain magical weapon properties

Lore & History

Origins: Forged by the greatest smiths working with divine or primordial powers, often as protection for champions facing apocalyptic threats.

Historical Significance: Every known suit has been worn by a legendary figure during world-changing events. The armor often outlives its wearers by millennia.

Cultural Impact: The existence of such armor has inspired countless legends and represents the pinnacle of protective magic in most cultures.

Divine Connections: Many suits have direct connections to gods of protection, war, or craftsmanship, and may carry their blessings or expectations.

Balancing Notes

Introduction Timing: Only appropriate for the highest levels (18+) when characters face threats capable of overwhelming even legendary defenses.

Campaign Impact: Fundamentally changes the nature of physical combat. Enemies must rely on magical attacks, environmental hazards, or save-based effects.

Limitation Management: The once-per-day immunity prevents constant invincibility while still providing incredible emergency protection.

Encounter Design

Recommended Challenges:

• Encounters mixing physical and magical threats where immunity timing is crucial
• Multi-day adventures where resource management becomes important
• Enemies with save-based attacks, magical damage, or environmental manipulation
• Social encounters where the armor's legendary status affects interactions

Tactical Adjustments: Intelligent enemies will quickly learn to avoid physical attacks and focus on magic, environmental hazards, or indirect methods.

Related Items

Legendary Defense: Other items providing immunity or extreme resistance to various damage types or effects.

Divine Equipment:

• Weapons and armor blessed by deities
• Items with cosmic significance and power
• Equipment tied to planar or divine forces

Complementary Equipment: Items that protect against the damage types this armor doesn't cover, creating comprehensive protection.

Roleplay Opportunities

Legendary Status: The armor marks its wearer as a figure of myth and legend, fundamentally changing how others perceive and interact with them.

Divine Responsibility: Wearing such powerful divine protection may come with expectations or obligations to higher powers.

Moral Complexity: Near-invulnerability to physical harm raises questions about the responsibilities that come with such power.