Magic Items

Efreeti Chain
Armor (chain mail), legendary (requires attunement)

While wearing this armor, you gain a +3 bonus to AC, you are immune to fire damage, and you can understand and speak Primordial. In addition, you can stand on and walk across molten rock as if it were solid ground.

The efreeti Prince Rashidi al-Zahar ibn Rath transmogrified an efreeti sultana into this delicate suit of crimson chain mail. The wearer of this armor always feels a slight draft, and sometimes finds it hard to stay focused on a task. This item can be found in the Dungeon Master’s Guide.

Discord is comprised of sharp, interlocking spikes of green crystal and extinguishes all nonmagical flames within 30 feet of it. A creature wearing Discord hears insidious whispers originating from a point just pbeyond their peripheral vision. Unless deafened, the creature has disadvantage on saving throws caused by, and on Wisdom checks related to, Father Llymic and its allies.
While wearing this armor, you gain a +2 bonus to AC. In addition, you can use your reaction to see normally in darkness, both magical and nonmagical, out to a distance of 120 feet until the start of your next turn. Discord can't be used this way again until the next dawn.
If a character wierlds Woe ( a longsword ) while wearing Discord, they are unharmed by temperatures as low as -60 degrees Fahrenheit.