There are few things more welcome-and rare-in the Gauntlet than Invulnerability. While invulnerable, a hero is completely immune to harm (though any health-draining effects of the dungeon will still have an effect) and can wade through the harshest of melee with nary a scratch.
Invulnerability comes in two flavors.
Silver invulnerability renders the hero immune to damage. However, other combat effects may occur, such as knockdown. While invincible, a hero will be completely silver.
If silver invulnerability is rare, gold invulnerability is super-rare. This variation, which renders a hero solid gold in color, not only makes the user invincible, but actually recovers health for every hit the hero takes!
This item functions identical to the one in Legends.