Tool Proficiency

When you adopt this specialization at 3rd level, you gain proficiency with smith's tools. If you already have this proficiency, you gain proficiency with one other type of artisan's tools of your choice.

Armorer Spells

Starting at 3rd level, you always have certain spells prepared after you reach particular levels in this class, as shown in the Armorer Spells table. These spells count as artificer spells for you, but they don’t count against the number of artificer spells you prepare.

Armorer Spell List

Arcane Armor

Beginning at 3rd level, your metallurgical pursuits have led to you making armor a conduit for your magic. As an action, you can turn a suit of armor you are wearing into Arcane Armor, provided you have smith's tools in hand.

You gain the following benefits while wearing this armor:

• If the armor normally has a Strength requirement, the arcane armor lacks this requirement for you.
• You can use the arcane armor as a spellcasting focus for your artificer spells.
• The armor attaches to you and can’t be removed against your will. It also expands to cover your entire body, although you can retract or deploy the helmet as a bonus action. The armor replaces any missing limbs, functioning identically to a body part it is replacing.
  The armor continues to be Arcane Armor until you don another suit of armor or you die.

Armor Model

Beginning at 3rd level, you can customize your Arcane Armor. When you do so, choose one of the following armor models: Guardian or Infiltrator. The model you choose gives you special benefits while you wear it.

Each model includes a special weapon. When you attack with that weapon, you can add your Intelligence modifier, instead of Strength or Dexterity, to the attack and damage rolls. When you make an attack with your special weapon as part of your action, you can make an additional attack with it as a bonus action.

You can change the armor's model whenever you finish a short or long rest, provided you have smith's tools in hand.

Guardian. You design your armor to be in the front line of conflict. It has the following features:

• Thunder Gauntlets. 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.
• Defensive Field. As a bonus action, you can gain temporary hit points equal to 1d8 + your artificer level, replacing any temporary hit points you already have. You can use this bonus action a number of times equal to your proficiency bonus, and regain all uses when you finish a long rest.
• Powered Limbs. You count as one size larger when determining your carrying capacity and the weight you can push, drag, or lift.

Infiltrator. You customize your armor for subtle undertakings. It has the following features:

• Lightning Launcher. 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.
• Powered Steps. Your walking speed increases by 5 feet.
• Dampening Field. You have advantage on Dexterity (Stealth) checks. If the armor normally imposes disadvantage on such checks, the advantage and disadvantage cancel each other, as normal. While wearing the armor, you can use your Intelligence, instead of your Dexterity, for Stealth checks.

Extra Attack

Starting at 5th level, you can attack twice, rather than once, whenever you take the Attack action on your turn.