DnD 3.5 to 5e Spell Conversions: Armor of Darkness

 

Armor of Darkness

4th-level abjuration

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• Casting Time: 1 action
• Range: Touch
• Components: V, S
• Duration: 8 hours
• Classes: Cleric, Warlock

You touch a willing creature who isn’t wearing armor, enveloping them in a protective shroud of flickering shadows until the spell ends. For the duration, that creature has darkvision out to a range of 60 feet. The creature’s base AC becomes 13 + its Dexterity modifier. The spell ends if the creature dons armor or if you dismiss the spell as an action. Additionally, the space the creature occupies is considered lightly obscured to creatures other than the target.

Undead creatures affected by Armor of Darkness have advantage on saving throws against Turn Undead.

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One of the spells from my conversions of the entire Dungeons and Dragons 3.5 Spell Compendium into 5e and published in Spells of Antiquity. Well, basically some special spooky mage armor that includes darkvision and makes it easier to hide.

DnD 3.5 to 5e Monster Conversions: Digester

 

This creature stands on two powerful hind legs. It has a long tail, but no other limbs, and a gray, pebbly hide with daggerlike markings. Its narrow head is equipped with a sucking mouth and a tubelike orifice in its forehead. 

- Dungeons and Dragons v3.5 Monster Manual

DnD Magic Item Conversions: Armor Part 5

Armor of the Desert Evening

Armor (scale mail), Common

Aura: Faint Evocation

This armor is designed to be worn in the desert heat without ill effects to the wearer. While wearing this armor, you and everything you wear and carry are unharmed by temperatures up to 150 degrees Fahrenheit. This does not grant any sort of resistance against fire damage. 

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Dragonarmor

Armor (heavy), Very Rare (requires attunement)

Aura: Strong Abjuration

You have a +1 bonus to AC while wearing this armor and have resistance to cold damage and fire damage.

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Eastern Wooden Armor

Armor (splint), Rare (requires attunement)

Aura: Moderate Transmutation

Created from strips of highly flexible wood, which have been treated and enchanted, you have +1 bonus to AC while wearing this armor and do not have disadvantage on Dexterity (Stealth) checks normally caused by wearing splint armor. In addition, Druids are always considered proficient with this armor.

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Armor of Eelix

Armor (light, medium or heavy), Rare (requires attunement)

Aura: Moderate Conjuration

When not in use, this armor appears to be a silver ring. As an action you can activate it, causing armor made of blue light to appear around you. The kind of armor is determined when the ring is created and cannot be changed afterwards. You are considered proficient with this armor even if you lack the appropriate proficiency. You cannot activate this armor while already wearing another suit of armor.

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Armor of Electricity

Armor (light, medium or heavy), Rare (requires attunement)

Aura: Moderate Evocation

While wearing this armor, you can use a bonus action and speak a command word to cause the armor to become charged with magical, electrical force for the next ten minutes. The next time a creature hits you with a melee weapon attack while within 5 feet of you, the armor discharges this energy and the attacker must make a DC16 Constitution saving throw. The creature takes 6d6 lightning damage on a failed save, or half as much damage on a successful one. Once you have used this trait, you cannot do so again until the following dawn.

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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.

DnD 3.5 to 5e Monster Conversions: Hellcat

Silently, with grace and power, a creature emerges on the path ahead. It has the shape of an enormous lion, but its form consists of blinding light and fiery sparks, as though its body were made of energy and not flesh and bone. 

- Dungeons and Dragons v3.5 Monster Manual

DnD Magic Item Conversions: Armor Part 4

 

Armor of Command

Armor (heavy), Rare (requires attunement)

Aura: Moderate Enchantment

While wearing this armor, you project an aura of confidence, bolstering allied forces. Each allied creature within 120 feet of you that can see you has advantage on Wisdom saving throws.  

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Armor of Concealed Wizardry

Armor (light, medium, or heavy), rare (+1), very rare (+2), or legendary (+3)

Aura: Moderate (+1) , Strong (+2) or Very Strong (+3) Illusion

You have a bonus to AC while wearing this armor. The bonus is determined by its rarity. In addition, the armor appears nonmagical to spells and magical effects that detect magic.

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Armor of Continual Cleanliness

Armor (light, medium or heavy), Common

Aura: Faint Transmutation

This suit of magical armor is continuously clean. It is never dirty, nor does it rust or show blemishes. 

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Armor of Coolness

Armor (light or medium), Common

Aura: Faint Evocation

While wearing this armor, you and everything you wear and carry are unharmed by temperatures up to 150 degrees Fahrenheit. This does not grant any sort of resistance against fire damage. 

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Armor of Cure Wounds

Armor (light, medium, or heavy), rare (+1), very rare (+2), or legendary (+3)

Aura: Moderate (+1) , Strong (+2) or Very Strong (+3) Evocation

You have a bonus to AC while wearing this armor. The bonus is determined by its rarity. In addition, you can cast the cure wounds spell, targeting yourself, using your spellcasting ability modifier. Once you have done so, you cannot do so again until the following dawn.

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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. As you could imagine, among 6,000+ magic items, there are quite a few different sets of armor that show up, which means there are still a few more of these left.

DnD 3.5 to 5e Spell Conversions: Arc of Lightning

 

Arc of Lightning

3rd-level evocation

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• Casting Time: 1 action
• Range: 30 feet (100 foot line)
• Components: V, S, M (two small iron rods)
• Duration: Instantaneous
• Classes: Sorcerer, Wizard

Choose one creature or object in range and one other creature or object within 100 feet of the first target. A bolt of electricity to arcs between the two targets. Both targets and any other creatures in a 5-foot wide line between those two creatures must make a Dexterity saving throw. A creature takes 8d6 lightning damage on a failed save, or half as much damage on a successful one. The lightning ignites flammable objects in the area that aren’t being worn or carried.

At Higher Levels: When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot above 3rd.

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One of the spells from my conversions of the entire Dungeons and Dragons 3.5 Spell Compendium into 5e and published in Spells of Antiquity. This one is quite a bit like lightning bolt, only instead of a bolt straight from the caster, you get to choose a pair of creatures to zap between.

DnD 3.5 to 5e Monster Conversions: Destrachan

Block of text here. A creature shambled forward on thick, taloned legs. Vaguely reptilian in form, its large, stooped frame ends in a mostly featureless head dominated by large eat structures and a gaping, toothless mouth.

- Dungeons and Dragons v3.5 Monster Manual