You can attack twice, instead of once, whenever you take the Attack action on your turn.

You can channel magic through your Steel Defender to impose disadvantage on attacks against creatures other than you, and you can use your reaction to impose a penalty to an attack made against a creature within 5 feet of the defender.

When holding a magic weapon, Sindri can use Intelligence for attack and damage rolls instead of Strength or Dexterity.

Sindri can command his Steel Defender to attack, impose disadvantage, or use its reaction to protect allies.

He can store a spell in a crafted object so another creature can cast it later.

You can imbue tiny constructs or objects with magical effects, creating harmless displays such as lights, recorded sounds, or mechanical devices.

You can use Intelligence instead of Dexterity or Strength for attack and damage rolls with magical weapons, and you can use infused objects as spellcasting focus if you are holding a tool set.

You learn the Artificer specialty of Battle Smith. You gain Battle Smith spells always prepared, proficiency with martial weapons, and the ability to use Intelligence for attack and damage rolls with magical weapons.

You can create a Steel Defender, a loyal construct companion that acts on your initiative, protects allies, and repairs itself with your command. It uses your spell attack bonus, saving throw DC, and artificer level in its statistics.

When wearing medium armor, you can add half your proficiency bonus, rounded down, to any ability check you make that uses a tool with which you are proficient. You can also ignore the gold and time requirements to craft nonmagical objects of metal, wood, or other materials when you have access to the proper tools.

You can use your Intelligence modifier, instead of Strength or Dexterity, for attack and damage rolls with magic weapons. Whenever you finish a long rest, you can touch a magic item and infuse it, causing it to function as if infused for you.

Your magical tinkering, infused items, and tool use become exceptionally efficient. You can create and maintain more infused items, and your infusions can be enhanced with additional flexibility at this level.

The Armor of Tools feature makes you even more versatile with tools, allowing you to adapt and rapidly employ crafted implements in the field.

You gain improved resilience and tactical coordination as your invention and spellcraft work together more smoothly.

Your infusions can now be placed into a greater number of items and your expertise extends farther, reflecting the refinement of your craft.

You gain a bonus to the hit point maximum of each artificer item you create, and you can craft certain magic items at a much faster pace.

When you hit a target with a weapon attack, you can cause the target to take force damage or one of your allies to regain hit points, using your Intelligence modifier and expending a use of Arcane Jolt. Your Steel Defender also becomes stronger and more durable as you advance.

You can secure shelter, food, and modest assistance from other members of your guild, and you can leverage your guild contacts to gather information or arrange support in civilized places.