Living Metal

While most rangers rely on the guidance of nature, Living Metal Rangers shed the weakness of flesh for ancient technologies lost to time. When all others age to dust, all that shall remain is the Dynasty of Living Metal.

Ancient Arsenal

Your modified body and connection to an unknown ancient force has granted you the following benefits.
Your creature type is now construct, armor you have donned can’t be removed against your will while you’re alive, you no longer need to eat sleep drink or breathe, and you get 30ft of Darkvision however instead of seeing in shades of grey you see in shades of green .

As a bonus action you may transform your weapon into any ranged weapon that you have proficiency in, Its traits and damage dice all change over to that weapon's, leaving only the weapon's separate effects, such as buffs, magical effects and enchantments, curses, and other similar effects, however its base damage type and any additional damage dealt by the weapon is changed to force damage. This transformation lasts for 1 minute, or if another creature attempts to wield it. Damage from this weapon cannot be used to knock a creature unconscious, and it can not be used non-lethally. This Weapon generates it's own ammo.

Restoration Protocols

At the start of each of your turns you regain 1 hit point. If this occurs while you have less than 1 hit point, you gain 1 stack of Degradation at 3 stacks the next time you are reduced to 0 you automatically fail 3 death saves. Degradation stacks last until you complete a Short Rest. Your resurrection sickness is reduced by 2 each long rest instead of 1.

at 11th level this healing increases to 1D4, and at 15th level in this subclass it increases to Constitution Modifier D4 with a minimum of 1.

Deathmark

You always have Misty Step prepared, you may cast it once per day without using a spell slot when cast this way you may also cast Hunter's mark without using a spell slot.

at 13th level you always have Dimension Door prepared, you may cast it once per day without expending a slot when cast this way You may also cast hunters mark without using a spell slot, and make one ranged weapon attack. This attack does not suffer a long range shooting penalty.

Shard Of The Ancients

At 15th Level you have caught the attention of those who granted you your enhanced form, they offer you a piece of their power. You may gain one of the following effects.

Shard Of Nightfall-Drain Life At the end of each of your turns you may deal 2d6 Necrotic damage to all creatures within 10ft of you, you regain life equal to half the damage dealt this way, if 10 or more life is restored this way you may remove 1 stack of degradation
Shard Of The Void-Void Spear When you hit a creature or object with a ranged attack you may reduce its AC by 2 until the start of your next turn stacking up to 3 times, if a vehicle gains 3 stacks one major component (Engine, wheels, weaponry) is disabled [DMs choice] until the end of your next turn. A weapon modified by your ancient arsenal can ignore the misfire property. 
Shard Of Deception-Dimensional Displacement When you cast Misty Step or Dimension Door, you may take up to 3 willing creatures that are within 30ft with you and they teleport to  unoccupied spaces within 30ft of you at the destination.