# Armor of Invulnerability *Heavy armor ([plate armor](3-Mechanics/CLI/items/plate-armor-xphb.md)), legendary (requires attunement)*  - **Armor Class**: 18 - **Strength**: Requires 15 STR. - **Stealth**: The wearer has disadvantage on Stealth (DEX) checks. - **Weight**: 65.0 lbs. You have [Resistance](3-Mechanics/CLI/rules/variant-rules/resistance-xphb.md) to Bludgeoning, Piercing, and Slashing damage while you wear this armor. ## Metal Shell You can take a [Magic](3-Mechanics/CLI/rules/actions.md#Magic) action to give yourself [Immunity](3-Mechanics/CLI/rules/variant-rules/immunity-xphb.md) 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. *Source: Dungeon Master's Guide (2024) p. 152*