Relentless Slasher

Relentless Slasher CR: 8

Medium fiend, chaotic evil

Armor Class: 15 (natural armour)

Hit Points: 84 13d8+26

Speed: 40 ft

STR

12 +1

DEX

18 +4

CON

14 +2

INT

14 +2

WIS

15 +2

CHA

16 +3

Saving Throws: Str +4, Dex +7, Con +5, Wis +5

Skills: Athletics +7, Perception +5, Survival +5

Condition Immunities: Charmed, Frightened

Senses: Darkvision 120 ft, passive Perception 15

Languages: Understands all languages but can't speak

Challenge Rating: 8

Legendary Resistance (1/Day). If the slasher fails a saving throw, it can choose to succeed instead.
Shrouded Presence. The slasher is immune to any effect that would sense it's emotions or read it's thoughts, and it can't be detected by abilities that senses Fiends.
Creating a Relentless Slasher. The tables below can be used to create the origins & methods:
Relentless Origins

d6	Origin
1	It was left for dead  and granted new life to seek revenge.
2	It was turned into a weapon of vengeance by a family member's bargain with a sinister force.
3	It was marked by a fiend before it's birth, and it's wicked nature emerged over time.
4	A wicked place or magic relic seeped into it's being, turning it into a monster.
5	The killer used it's body to contain an evil entity.
6	The killer appears to be an ordinary person who doesn't realise it turns into a killer when enraged.

Relentless Methods

d8	Method
1	Artist. This killer turns it's victims into works of art, perhaps creating grisly tableaus or using their blood in the forging of new weapons.
2	Author. The killer leaves, messages, poems, song lyrics, or parts of it's creative masterpiece at the scenes of it's crime.
3	Avatar. The killer sacrifices it's victims, believing it's a manifestation of a deity or a force beyond morality.
4	Doctor. The killer dissects victims or harvests their organs for the sake of medical understanding.
5	Mask. The killer wears a distinctive disguise, it's visage becoming a symbol of it's crimes.
6	Penitent. The killer can't help itself from committing crimes and seeks help to thwart it's own continuing crimes.
7	Ritualist. The killer always attacks the same type of person at the same type of place in the same way.
8	Trophy Taker. The killer reliably collects something from it's victims, hoarding them as trophies.

Actions

Multiattack. The slasher makes two Slasher's Knife attacks.
Slasher's Knife. Melee Weapon Attack +7 to hit, reach 5 ft, or range 30/60 ft, one target. Hit 6 1d4+4 slashing damage plus 21 6d6 necrotic damage. If the target is a creature, it suffers a lingering wound that causes it to take 7 2d6 necrotic damage at the start of each of it's turns. Each time the slasher hits the wounded target with this attack, the damage dealt by the wound increases by 3 1d6 . The wound ends if the target regains hit points or if a creature uses an action to staunch the wound, which requires a successful DC 15 Wisdom (Medicine) check.

Legendary Actions

The slasher can take 3 legendary actions, choosing from the options below. Only one legendary action potion at a time and and only at the end of another creature's turn. The slasher regains spent legendary actions at the start of it's turn.

• Slice. Melee or Ranged Weapon Attack +7 to hit, reach 5 ft, or ranged 30/60 ft, one target. Hit 7 1d6+4 slashing damage.
• Vanishing Strike (Costs 3 Actions). The slasher makes one Slasher's Knife attack. After the attack hits or misses, the slasher can teleport up to 30 ft to an unoccupied space it can see.

A relentless slasher is a murderer built of stealth & speed. They have varied backgrounds, and a merciless need to kill.

Suggested Environments

Settlements