dnd 5e – Can you infuse the Arcane Armor’s Weapon before you gain Armor Modifications?

You can apply infusions to the weapons of your Arcane Armor after you obtain that feature.

For reference, the relevant excerpts, emphasis mine.

Each of the armor’s gauntlets counts as a simple melee weapon while you aren’t holding anything in it, and it deals 1d8 thunder damage on a hit. A creature hit by the gauntlet has disadvantage on attack rolls against targets other than you until the start of your next turn, as the armor magically emits a distracting pulse when the creature attacks someone else.

A gemlike node appears on one of your armored fists or on the chest (your choice). It counts as a simple ranged weapon, with a normal range of 90 feet and a long range of 300 feet, and it deals 1d6 lightning damage on a hit. Once on each of your turns when you hit a creature with it, you can deal an extra 1d6 lightning damage to that target.

Both of these weapons count as simple, and are therefore valid targets for the Enhanced Weapon infusion.

Item: A simple or martial weapon
This magic weapon grants a +1 bonus to attack and damage rolls made with it.

Since your arcane armor is a single item until level 9, when you obtain Armor Modifications, it would take up the infusion slot for your arcane armor, but it is certainly a valid target for it.

dnd 5e – Which Artificer Infusions are appropriate for the Armorer’s Arcane Armor’s special weapon?

At 9th level, the Armorer Artificer (from Tasha’s Cauldron of Everything) gains the “Armor Modifications” feature :

You learn how to use your artificer infusions to specially modify your Arcane Armor. That armor now counts as separate items for the purposes of your Infuse Items feature: armor (the chest piece), boots, helmet, and the armor’s special weapon. Each of those items can bear one of your infusions, and the infusions transfer over if you change your armor’s model with the Armor Model feature. In addition, the maximum number of items you can infuse at once increases by 2, but those extra items must be part of your Arcane Armor.

This special weapon is called ‘Thunder Gauntlets’ (a simple melee weapon) for the ‘Guardian’ Armor Model, and ‘Lightning Launcher’ (a simple ranged weapon) for the ‘Infiltrator’ Model.

But I am wondering which Artificer Infusions are appropriate for this special weapon ? Is it only the ‘Enhanced Weapon’ and ‘Radiant Weapon’ infusions, or are there others ?

dnd 5e – What is the origin of the terms used for 5e plate-based armors?

The question is a bit backward. All classification systems are imposed from the future looking back at the past. Is there an armor called “half-plate”? Well that depends on what you mean — when, and by whom? Your 12th century armorsmith wouldn’t be thinking, “Hmm, is this half plate armor?” He’d be talking about the customer’s specific requirements, where fashion and function both played roles, and about specific features of the armor in his hands.

Is D&D really any less qualified to make up terms for vast classes of armor than some Victorian gentleman, or a casual ARMA enthusiast, or a historian writing papers for a journal?

Half-plate

But, to the point. Did the term “half-plate” exist before D&D? Well, probably not. It’s difficult to say with any certainty that a certain term was never used anywhere in the wide world; but from what I can find, armor that consists of fitted plates over the upper body with little lower-body protection beyond strap-on greaves and an armor or chain skirt is often called “half-armor”.

The most famous half-armor is probably Alemain rivet armor (a mass-produced form of plate) or demilance.

I suspect “half-plate” was made up for the game in an effort to increase clarity, because “half-armor” sounds a bit vague.

Breastplate

Technically speaking, a breastplate is just the front-plate; a cuirass is the torso armor that consists of a breastplate and a backplate. That said, the terms appear to have been very nearly interchangeable for a few centuries, so getting overly technical on that point may not be in the interest of clear and concise writing.

I somewhat disagree that breastplates only exist as a piece of a larger suit. A cuirass is a very common piece of armor across the world, historically, and is still in use today in the form of the flak jacket or plate-carrier vest (or a bulletproof vest, to some extent). If you ask “did anyone ever wear a cuirass and nothing else in combat”, then I could easily point to the United States military’s modern tactical gear as an example.

But the same is true historically. In past centuries, most armies were not issued gear, but had to pay for their own armor and weapons, so personal wealth was the main determining factor of how much armor you wore. If you couldn’t afford anything else, a nice sturdy anything over your chest and a solid helmet would vastly increase your chance of walking away from a weapon hit, and those pieces have a minimal impact on mobility since they’re over areas of the body that largely do not bend.

dnd 5e – How does Arcane Armor’s removal of Strength requirements apply at a table using the Encumbrance variant?

The Armorer Artificer’s Arcane Armor feature says:

If the armor normally has a Strength requirement, the arcane armor lacks this requirement for you.

This is in reference to the following regarding certain heavy armors:

If the Armor table shows “Str 13” or “Str 15” in the Strength column for an armor type, the armor reduces the wearer’s speed by 10 feet unless the wearer has a Strength score equal to or higher than the listed score. [PHB, pg 144]

However, the Encumbrance variant says, in part:

When you use this variant, ignore the Strength column of the Armor table in chapter 5.

If you carry weight in excess of 5 times your Strength score, you are encumbered, which means your speed drops by 10 feet. [PHB, pg 176]

Is there guidance for how to apply the Arcane Armor feature at a table that uses the Encumbrance variant?

dnd 5e – Which Artificer Infusions are appropriate for the Armorer’s Arcane Armor’s special weapon?

At 9th level, the Armorer Artificer (from Tasha’s Cauldron of Everything) gains the “Armor Modifications” feature :

You learn how to use your artificer infusions to specially modify your Arcane Armor. That armor now counts as separate items for the purposes of your Infuse Items feature: armor (the chest piece), boots, helmet, and the armor’s special weapon. Each of those items can bear one of your infusions, and the infusions transfer over if you change your armor’s model with the Armor Model feature. In addition, the maximum number of items you can infuse at once increases by 2, but those extra items must be part of your Arcane Armor.

This special weapon is called ‘Thunder Gauntlets’ (a simple melee weapon) for the ‘Guardian’ Armor Model, and ‘Lightning Launcher’ (a simple ranged weapon) for the ‘Infiltrator’ Model.

But I am wondering which Artificer Infusions are appropriate for this special weapon ? Is it only the ‘Enhanced Weapon’ and ‘Radiant Weapon’ infusions, or are there others ?

dnd 5e – Could Adamantine armors (and Mithral armors) have magical properties (+1 for exemple) in 5e?

As an ex player of D&D 3.5, I’m a little bit confused about Adamantine armors and Mithral armors. In 3.5e, they are not magical, it just classic armor with a different material. So they can have magical properties.

However, in 5e, they are considered magic items in some way, but not in other (see the first related question’s accepted answer). So that why I’m here to ask “Could Adamantine armors (and Mithral armors) have magical properties (+1 for exemple) in 5e?”


related:

Are weapons and armor made of Mithral or Adamantine considered magical?

Can you have 2 force fields in 2 separate armors?

It says specifically
"An armor can not support more than one force field upgrade."
If you have a power armor and a light underneath, can you install a force field on both?