Metallurgist.

There are those students of magic who study the manipulation and control of certain elements. Students of Metallurgy are no exception, insisting that metal be classified in the same category of important elements such as water, earth, fire, and air. These wizards favour spells that control metal and effect weapons and armour.

Metal Savant

Starting at 2nd level, your study of metals has granted you greater insight and knowledge regarding how to work metal. You can temporarily alter the shape of one nonmagical object. you perform a metallurgic procedure on any metal transforming it into a different shape. For every 10 minutes, you spend performing the procedure you can transform up to 1 cubic foot of material. After 1 hour or until you dispel it the material reverts to its original shape.

You also gain proficiency in either smith's tools or tinker's tools. In addition, whenever you make an Intelligence (History) check related to the origin of metalwork or technology, you are considered proficient in the History skill and add double your proficiency bonus to the check, instead of your normal proficiency bonus.

Smith's tools

You gain Proficiency with Smith's tools.

Tinker's tools

You gain proficiency with Tinker's tools

Alloy Shield

At 2nd level, you know how to control metal in order to shield you from harm. As a bonus action, you can summon pieces of metal that float around you for 1 minute. You may dismiss the alloy shield whenever you want (no action required).

While Alloy Shield is Active you gain the following benefits:

• You gain a bonus to your AC equal to your Intelligence modifier rounded up (minimum of +1).
• You gain a bonus to any Constitution saving throw you make to maintain your concentration on a spell. The bonus equals your Intelligence modifier (minimum of +1).

You can use this feature twice. You regain all expended uses of it when you finish a short or long rest.

Metallic Mage

By 6th level, you have learned how to manipulate metals around you. You add the heat metal spell to your spellbook, this spell is always prepared for you and does not count against your total number of prepared spells it also counts as a wizard spell for you. Whenever you cast heat metal, you can change the property of the spell from heating up to conducting electricity, freezing, or becoming covered in metal spikes. When you do so, you can change the damage type of this spell from fire damage to lightning, cold, or piercing damage.

Ironblood

At 10th level, you have become magically attuned to the iron within your body. you gain immunity to disease and the poisoned condition, as well as resistance to poison damage. You have also become skilled at the manipulation of your Alloy Shield. while your Alloy Shield feature is active whenever you take damage you can use your reaction to burn a spell slot and reduce the damage taken by an amount equal to 4 times the level of the spell slot (up to level 5).

Platinum Resistance

At 14th level, Your control over metal has become instinctual. While you have your Alloy shield active you have advantage on physical saving throws against (STR, DEX, CON). Furthermore, you have resistance against the damage of said effects.