Martial Archetype: Sand Soldier
In the eyes of a sand soldier, everything is the dust of creation given form. Weapons and armor are merely manifestations of these sands, existing only to return others back to that form. Sand soldiers learn to break these items, and even themselves, down into the particles that give life physicality. In doing, they provide themselves a timeless edge in battle, wielding the most minute of things in a grand way.
Bonus Proficiency
When you choose this archetype at 3rd level, you prepare yourself for the harsh life of one who walks the sands. In order to prepare to see through mirages, find water, and navigate, you gain proficiency in one of the following skills of your choice: Investigation, Nature, Perception, or Survival.
Particle Armory
Starting at 3rd level, your bond with the sands allow you to break your weapons and armor down into the finest of materials. As a bonus action, you can transform a weapon, ammunition, shield, or set of armor that you are holding into a cloud of dust or sand that hovers in your space. You can transform a number of objects in this way up to your Constitution modifier (minimum of 1), and while you have at least one object transformed in this way, you are considered lightly obscured.
You can return any number of objects to their normal form as a bonus action, immediately donning or wielding it if you are able. If you die, any transformed objects immediately revert to their normal form, appearing in an unoccupied space within 5 feet of you.
Additionally, when you take the Attack action, you can return a transformed weapon (no action required) so long as you are able to wield the weapon. Once per turn, when you hit with a transformed weapon, your attack is considered magical and deals an additional 1d8 damage of the same type to the target. This damage increases to 2d8 when you reach 15th level. If your weapon requires ammunition, you can use a transformed ammunition or normal ammunition.
Dust to Dust
Beginning at 7th level, you can break your body down to dust. As an action, you can cast the gaseous form spell on yourself. While in this form, you appear as if a sandstorm and you have a flying speed of 30 feet, instead of 10 feet.
Once you use this feature, you can't do so again until you finish a long rest.
Sand Shield
At 10th level, you have learned how to manipulate the form of your transformed objects. When a creature you can see within 30 feet of you is targeted by an attack, you can use your reaction to manifest a protective dust around the creature. The creature gains a +2 bonus to its AC until the start of its next turn.
Sands of Time
Starting at 15th level, you understand that every particle of sand has been something else in its past and harness this past form to create a new form. Over the course of 10 minutes, which can be accomplished during a short or long rest, you can create a nonmagical weapon, shield, or set of armor from particles present in the air, ground, or water around you. An object created in this way stays in its new form for 24 hours or until you die, at which time it fades to dust.
Sandstorm Assault
At 18th level, you have learned to wield your weapons in their transformed state. When you take the Attack action, you can forgo your normal attacks to attack with each of your transformed weapons once. These weapons remain transformed for the duration of the attack action but gain the additional damage provided by your Particle Armory feature.
Additionally, while you attack in this way, the sands of your weapons swarm around you. The area within 5 feet of you is heavily obscured for creatures other than you until the end of your turn.
Once you use this feature, you can't do so again until you finish a short or long rest.
