As an action, you can touch a Tiny nonmagical object and give it a minor magical property. The effect lasts indefinitely, or until you use this feature again.

As an action, you can gain temporary hit points equal to your Intelligence modifier, five times per long rest.

You can turn a suit of armor into Arcane Armor. It replaces missing limbs, cannot be removed against your will, ignores Strength requirements, and can be donned or doffed as an action. You can use Intelligence instead of Strength or Dexterity for attack and damage rolls with its special weapons.

You can choose Guardian or Infiltrator armor. Guardian grants Thunder Gauntlets, which deal 1d8 thunder damage and impose disadvantage on attacks against targets other than you. It also grants Defensive Field, allowing you to gain temporary hit points as a bonus action. Infiltrator grants Lightning Launcher, which deals 1d6 lightning damage, and Powered Steps and Dampening Field.

When a creature hit by your Thunder Gauntlets attacks a target other than you, it has disadvantage on that attack.

Make two attacks with Thunder Gauntlets, Lightning Launcher, or another weapon when taking the Attack action.

Add your Intelligence modifier to an ability check or saving throw made by you or a creature within 30 feet, five times per long rest.

You use Intelligence as your spellcasting ability. You know three artificer cantrips and prepare artificer spells from the artificer spell list. You can cast spells using your tools as a focus.

You learn eight artificer infusions and can infuse up to four objects at once. An infusion can be placed on a suitable nonmagical object after a long rest.

You can create any set of artisan's tools in one hour using tinker's tools, provided you have raw materials.

Your proficiency bonus is doubled for any ability check you make using a tool with which you are proficient.

You can attune to up to four magic items. Crafting common or uncommon magic items takes one-quarter of the normal time and costs half as much gold.

At 4th, 8th, and 12th level, you increased Intelligence, reaching 20. At 16th level, you gained the War Caster feat.

You have advantage on Constitution saving throws made to maintain concentration on a spell when you take damage. You can perform the somatic components of spells even when holding weapons or a shield, and you can cast a spell as an opportunity attack when the spell targets only that creature.

You gain proficiency with heavy armor, smith's tools, and tinker's tools. You can use your armor as a spellcasting focus. You also gain the Arcane Armor, Armor Model, Armor Modifications, and Perfected Armor features as described below.

You always have magic missile and thunderwave prepared. They count as artificer spells for you and do not count against the number of spells you prepare.

You can modify four pieces of your Arcane Armor, including the armor, helmet, armor's boots, and special weapon. Each modification can hold one infusion, and those items count as separate items for infusion limits.

When a creature affected by your Thunder Gauntlets hits another creature, the target takes an extra 1d6 thunder damage. Alternatively, once on each of your turns when you hit with your Lightning Launcher, the target takes an extra 1d6 lightning damage.

You can use five additional attunement slots for a total of six. You gain a bonus of 1 to all saving throws for each magic item you are attuned to.

He retains the respect and trust of his former military unit. Soldiers loyal to his old command recognize his insignia, offer him temporary shelter, and may provide limited assistance when they are not risking their lives or violating orders.