Slayer Battle Master

Those who emulate the archetypal Slayer Battle Master employ a slightly more brutal version of the martial techniques passed down through generations; but they still acknowledge the true decent of the techniques. To a Slayer Battle Master, combat tends to be a lively-hood more than a academic field, sometimes learning weapon-smithing  and  other non-hostile activities are included ones life. Not every fighter absorbs the lessons of history, theory, and artistry and exploits it at times are reflected in the Slayer Battle Masters archetype, but those who do are well-rounded fighters of great skill and battlefield knowledge .

Combat Superiority

When you choose this archetype at 3rd level, you learn maneuvers that are fueled by special dice called superiority dice.

Maneuvers. You learn three maneuvers of your choice, which are detailed under “Maneuvers” below. Many maneuvers enhance an attack in some way. You can use only one maneuver per attack.

You learn two additional maneuvers of your choice at 7th, 10th, and 15th level. Each time you learn new maneuvers, you can also replace one maneuver you know with a different one.

Superiority Dice. You have four superiority dice, which are d8s. A superiority die is expended when you use it. You regain all of your expended superiority dice when you finish a short or long rest.

You gain another superiority die at 7th level and one more at 15th level.

Saving Throws. Some of your maneuvers require your target to make a saving throw to resist the maneuver’s effects. The saving throw DC is calculated as follows:

Maneuver save DC = 8 + your proficiency bonus + your Strength or Dexterity modifier (your choice)

Student of War

At 3rd level, you gain proficiency with one type of artisan’s tools of your choice.

Killer's Intent

At 3rd level, you strike with killing intent. once per turn, when you take the Attack action and make a attack with a melee weapon, you can choose to attack with disadvantage. If you do, regardless of whether or not you hit, the target must make a Wisdom Saving throw (DC equal to 8+ your proficiency bonus + your Constitution modifier). On a failed save, the creature is frightened until the start of your next turn.

You can use this feature a number of times equal to your Constitution modifier (minimum of once, regaining expended uses on short or long rests.

Killer's Instinct

Also at 3rd level, you'll always reach the next victim. Immediately before you make a melee weapon attack, you can use your bonus action to move up to you speed towards the target. if you do and that attack hits a frightened creature, you gain temporary hit points equal to half your fighter level + your Constitution modifier, which lasts until the start of your next turn.

Maneuvers

The maneuvers are presented in alphabetical order.

Ambush

When you make a Dexterity (Stealth) check or an initiative roll, you can expend one superiority die and add the die to the roll, provided you aren’t incapacitated.

Bait and Switch

When you’re within 5 feet of a creature on your turn, you can expend one superiority die and switch places with that creature, provided you spend at least 5 feet of movement and the creature is willing and isn’t incapacitated. This movement doesn’t provoke opportunity attacks.

Roll the superiority die. Until the start of your next turn, you or the other creature (your choice) gains a bonus to AC equal to the number rolled.

Brace

When a creature you can see moves into the reach you have with the melee weapon you’re wielding, you can use your reaction to expend one superiority die and make one attack against the creature, using that weapon. If the attack hits, add the superiority die to the weapon’s damage roll.

Commander’s Strike

When you take the Attack action on your turn, you can forgo one of your attacks and use a bonus action to direct one of your companions to strike. When you do so, choose a friendly creature who can see or hear you and expend one superiority die. That creature can immediately use its reaction to make one weapon attack, adding the superiority die to the attack’s damage roll.

Commanding Presence

When you make a Charisma (Intimidation), a Charisma (Performance), or a Charisma (Persuasion) check, you can expend one superiority die and add the superiority die to the ability check.

Disarming Attack

When you hit a creature with a weapon attack, you can expend one superiority die to attempt to disarm the target, forcing it to drop one item of your choice that it’s holding. You add the superiority die to the attack’s damage roll, and the target must make a Strength saving throw. On a failed save, it drops the object you choose. The object lands at its feet.

Distracting Strike

When you hit a creature with a weapon attack, you can expend one superiority die to distract the creature, giving your allies an opening. You add the superiority die to the attack’s damage roll. The next attack roll against the target by an attacker other than you has advantage if the attack is made before the start of your next turn.

Evasive Footwork

When you move, you can expend one superiority die, rolling the die and adding the number rolled to your AC until you stop moving.

Feinting Attack

You can expend one superiority die and use a bonus action on your turn to feint, choosing one creature within 5 feet of you as your target. You have advantage on your next attack roll against that creature this turn. If that attack hits, add the superiority die to the attack’s damage roll.

Goading Attack

When you hit a creature with a weapon attack, you can expend one superiority die to attempt to goad the target into attacking you. You add the superiority die to the attack’s damage roll, and the target must make a Wisdom saving throw. On a failed save, the target has disadvantage on all attack rolls against targets other than you until the end of your next turn.

Grappling Strike

Immediately after you hit a creature with a melee attack on your turn, you can expend one superiority die and then try to grapple the target as a bonus action (see the Player’s Handbook for rules on grappling). Add the superiority die to your Strength (Athletics) check.

Lunging Attack

When you make a melee weapon attack on your turn, you can expend one superiority die to increase your reach for that attack by 5 feet. If you hit, you add the superiority die to the attack’s damage roll.

Maneuvering Attack

When you hit a creature with a weapon attack, you can expend one superiority die to maneuver one of your comrades into a more advantageous position. You add the superiority die to the attack’s damage roll, and you choose a friendly creature who can see or hear you. That creature can use its reaction to move up to half its speed without provoking opportunity attacks from the target of your attack.

Menacing Attack

When you hit a creature with a weapon attack, you can expend one superiority die to attempt to frighten the target. You add the superiority die to the attack’s damage roll, and the target must make a Wisdom saving throw. On a failed save, it is frightened of you until the end of your next turn.

Parry

When another creature damages you with a melee attack, you can use your reaction and expend one superiority die to reduce the damage by the number you roll on your superiority die + your Dexterity modifier.

Precision Attack

When you make a weapon attack roll against a creature, you can expend one superiority die to add it to the roll. You can use this maneuver before or after making the attack roll, but before any effects of the attack are applied.

Pushing Attack

When you hit a creature with a weapon attack, you can expend one superiority die to attempt to drive the target back. You add the superiority die to the attack’s damage roll, and if the target is Large or smaller, it must make a Strength saving throw. On a failed save, you push the target up to 15 feet away from you.

Quick Toss

As a bonus action, you can expend one superiority die and make a ranged attack with a weapon that has the thrown property. You can draw the weapon as part of making this attack. If you hit, add the superiority die to the weapon’s damage roll.

Rally

On your turn, you can use a bonus action and expend one superiority die to bolster the resolve of one of your companions. When you do so, choose a friendly creature who can see or hear you. That creature gains temporary hit points equal to the superiority die roll + your Charisma modifier.

Riposte

When a creature misses you with a melee attack, you can use your reaction and expend one superiority die to make a melee weapon attack against the creature. If you hit, you add the superiority die to the attack’s damage roll.

Sweeping Attack

When you hit a creature with a melee weapon attack, you can expend one superiority die to attempt to damage another creature with the same attack. Choose another creature within 5 feet of the original target and within your reach. If the original attack roll would hit the second creature, it takes damage equal to the number you roll on your superiority die. The damage is of the same type dealt by the original attack.

Tactical Assessment

When you make an Intelligence (Investigation), an Intelligence (History), or a Wisdom (Insight) check, you can expend one superiority die and add the superiority die to the ability check.

Trip Attack

When you hit a creature with a weapon attack, you can expend one superiority die to attempt to knock the target down. You add the superiority die to the attack’s damage roll, and if the target is Large or smaller, it must make a Strength saving throw. On a failed save, you knock the target prone.

Blood Hound

At 7th level, your indulgence in the battlefield has steeled your will and sharpened your senses. You can't be Surprised,and creatures within 60 feet of you, if they have blood, cant benifit from being hidden or invisible against you if they are below half their hit point maximum.

Know Your Enemy

Starting at 7th level, if you spend at least 1 minute observing or interacting with another creature outside combat, you can learn certain information about its capabilities compared to your own. The DM tells you if the creature is your equal, superior, or inferior in regard to two of the following characteristics of your choice:

• Strength score
• Dexterity score
• Constitution score
• Armor Class
• Current hit points
• Total class levels (if any)
• Fighter class levels (if any)

Improved Combat Superiority

At 10th level, your superiority dice turn into d10s. At 18th level, they turn into d12s.

Thrill of Battle

At 10th level, you thrive in the thrill of battle. you have advantage on initiative checks. 

Also, there isn't a moment when you aren't fighting. When you use your Second Wind, you can make a single melee weapon attack with advantage against a creature within reach. On a hit, the target can't take reactions until the start of your next turn.

Harbringer

At 15th level, the sight of you signifies a slaughter. When you use you Killer's Instinct to move towards a target, your movement doesn't provoke opportunity attacks and ignores difficult terrain. Also, a creature cant gain advantage on saving trows against being frightened of you.

Relentless

Starting at 15th level, when you roll initiative and have no superiority dice remaining, you regain one superiority die.

Last Breath

At !8th level, you've breathed your last breath as a person, the hunt for battle is all that drives you forward. After succeeding on a death saving throw, you can choose to stand up and act as if you had started your turn conscious. You remain conscious until the end of you turn. The attack you make during this turn is made with advantage and deals an additional 5d10 damage of the weapon's type on a hit. While you have 0 hit points during this turn taking damage causes death saving throw failures as normal, though three death saving throw failures don't kill you. At the end of your turn, you fall unconscious, if you still have 0 hit points, or die if you have three death saving throw failures.

Once you use this Feature, you can't use it again until you complete a long rest.

Improved Combat Superiority

At 18th level, your superiority dice turn into d12s.