Source: Tal'Dorei Campaign Setting

Armor (shield), legendary (requires attunement by a non-evil character)

This massive, silvered shield bearing the crest of the Platinum Dragon never tarnishes. The metal is warm to the touch. While holding the shield, you have a +1 bonus to AC. This bonus is in addition to the shield’s normal bonus to AC. You are also immune to the prone condition while bearing this shield.

Awakened. When a character awakens Honor’s Last Stand, apply the following changes to the item’s traits:

  • Increase the bonus to AC to a +2.
  • Whenever a creature’s attack against you misses, you can use your reaction to immediately attempt to make a shove attack against that creature.

Exalted. When a character exalts Honor’s Last Stand, apply the following changes to the item’s traits:

  • Increase the bonus to AC to a +3.
  • Using a bonus action, you can protect an adjacent ally, imparting +3 to their AC until the beginning of your next turn, or they are no longer adjacent to you (whichever comes first).