DnD Magic Item Conversions: Armor Part 6

Elven Chain Mail
Armor (chain mail), Rare
Aura: Moderate Transmutation

You gain a +1 bonus to AC while you wear this armor. You are considered proficient with this armor even if you lack proficiency with heavy armor.

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Armor of Energy Drain
Armor (light, medium or heavy), Rare (requires attunement)
Aura: Moderate Necromancy

You have a +1 bonus to AC while wearing this armor.

Curse. This armor drains your vitality. Whenever you take damage while wearing the armor, your hit point maximum is reduced by an equal amount. The reduction lasts so long as you remain attuned to the armor. You die if this effect reduces your hit point maximum to 0.

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Armor of Etherealness
Armor (light, medium, or heavy), Very Rare (requires attunement)
Aura: Strong Transmutation

While you're wearing this armor, you can speak its command word as an action to gain the effects of the etherealness spell, which last for 10 minutes or until you remove the armor or use an action to speak the command word again. This property of the armor can't be used again until the next dawn.

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Evil Dragon Armor
Scale Mail, Rare 
Aura: Moderate Abjuration

This armor is fashioned from the hide of a chromatic dragon, granting the wearer resistance to one damage type depending on the kind of dragon it was created from.

Color - Resistance 
Black - Acid
Blue - Lightning
Green - Poison
Red - Fire
White - Cold

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Armor of Fear
Armor (heavy), Uncommon (requires attunement)
Aura: Minor Necromancy

This magical armor has 7 charges and regains 1d4 expended charges each day at dawn. As a bonus action you can speak a command word and expend one charge to radiate an aura of fear in a 15-foot radius sphere centered on you until the start of your next turn. While the fear aura lasts, any creature other than you that starts its turn in the area or enters the area for the first time in a turn must succeed on a DC 12 Wisdom saving throw or be frightened of you until the aura ends. A Construct or an Undead is immune to this effect.

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Here are some more magic items converted from the Dungeons and Dragons 2e Encyclopedia Magica into 5e and published on the DMsGuild under Artifacts of Antiquity Volume 2. More and more armor. For the rest of my life armor.