Fighter Archtype: Slayer

Warriors of the wildnerness, Slayers specialize in hunting monsters that threaten the edges of civilization-humanoid raiders, rampaging beasts and monstrosities, terrible giants, and deadly dragons. They learn to track their quarry as a predator does, moving stealthily through the wilds and hiding themselves in brush and rubble. Slayers focus their combat training on identifying a foe's weakness to exploit its vulnerabilities.

Bonus Proficiency

When you choose this archetype at 3rd level, you gain proficiency in one of the following skills of your choice: Nature, Perception, Stealth, or Survival. Alternatively, you learn one language of your choice.

Slayer's Mark

Starting at 3rd level, you can focus your attention on one foe, increasing the harm you can inflict on it. As a bonus action, you designate one creature you can see within 60 feet of you as the target of this feature. You deal an extra 1d6 damage to the target whenever you hit it with a weapon attack, and you have advantage on any Wisdom (Perception) or Wisdom (Survival) check you make to find it. This feature lasts for 1 hour.

You can use this feature a number of times equal to your Wisdom modifier (minimum of once). You regain all expended uses of it when you finish a long rest.

Predator's Eye

At 7th level, you gain the ability to quickly study a creature to discern its strengths and weaknesses based off your previous experiences and monster knowledge. When you use Slayer's Mark on a creature, you immediately learn whether the creature has any damage immunities, resistances, or vulnerabilities and what they are.

Spell Less Ranger Reimagined After viewing different attempts online, I decided a spell less ranger is much more limited than its magical counterpart and could easily be a rogue or fighter subclass. We already have the Scout rogue, which focuses on a nimble ambusher, but what about the more sturdy rangers like Aragorn, Drizzt, or Goblin Slayer that don't fit as rogues? These "rangers" are warriors first and foremost, and this fighter archetype is here to emulate that fantasy. I followed the Cavalier and Samurai model in rewarding extra proficiencies but also giving limited resources to the fighter in the form of Slayer's Mark (Hunter's Mark). Boiling down many possible ranger features into one subclass was difficult, but I focused on the core theme: a warrior comfortable in the wilderness and expert at slaying monsters.

Relentless Hunter

At 10th level, if the target of your Slayer's Mark drops to 0 Hit Points, you can use a Bonus Action on a subsequent turn of yours to mark a new creature.

Counterstrike

At 15th level, if the target of your Slayer's Mark misses you with an attack, you can make one weapon attack against it as a reaction.

Slayer's Fury

At 18th level, you are a master at exploiting a creature's weaknesses to kill it quicker. When you mark a creature with Slayer's Mark, you can choose to add your Wisdom modifier to any attack roll and damage roll against that creature. Once the creature drops to 0 Hit Points, you can use Relentless Hunt but do not gain the benefits of Slayer's Fury on the next target.

Once you use this feature, you can't use it again until you finish a long rest.