Ash Guardian

Amorphous. The Ash Guardian can move through a space as narrow as 1 inch wide without squeezing.

Shadow Stealth. While in dim light or darkness, the Ash Guardian can take the Hide action as a bonus action.

Wind Weakness. While in wind, the Ash Guardian has disadvantage on attack rolls, ability checks, and saving throws.

Multiattack. The Ash Guardoan makes two Shadow Blade attacks.

Ash Blade. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 4) piercing damage plus 12 (3d8) necrotic damage. Unless the target is immune to necrotic damage, the target’s Strength score is reduced by 1d4 each time it is hit by this attack. The target dies if its Strength is reduced to 0. The reduction lasts until the target finishes a short or long rest.

If a humanoid dies from this attack, their body crumbles to ash, and an Ash Guardian rises from the remains 1d4 hours later.

Shadow Clone.  Spell-like Ability. 3/day. as a bonus action the Ash Guardian can clone itself creating a shadow copy in an unoccupied space that it can see within 10 feet.

The Ash Guardian gets a +2 bonus to attack and damage rolls while a Shadow Clone exists. 

A Shadow Clone can not use the Shadow clone ability.

Only one Shadow Clone can exist per Ash Guardian.

The Shadow Clone disappears when it drops to 0 hit points, when it's farther than 120 feet from the Ash Guardian, or when the Ash Guardian uses an action to dismiss it. 

 If the Ash Guardian is the target of an attack and is within 5 feet of the Shadow Clone, it can use your reaction to command the Shadow Clone to become the target of the attack instead.