Sanquel

Sanquels are undead monsters that are created through a dark necromantic ritual. By sacrificing an intelligent creature the caster infuses the blood of the sacrifice with their own life energy. They are created when a dark wizard wants to track down or hunt an enemy. While they are pursuing their quarry they do not stop; they have no need for sleep or rest.
They appear as amorphous blood, often taking the shape of humanoids. When attacking their enemies they shape their arms into sharp spears that can skewer their enemies. Once they do that they can draw the blood from their enemies to heal themselves.

Sanquel CR: 4

Medium undead, ooze, neutral evil

Armor Class: 16 (Natural Armor)

Hit Points: 84 (14d8 + 28)

Speed: 40 ft , burrow: 20 ft , climb: 20 ft

STR

14 +2

DEX

16 +3

CON

14 +2

INT

6 -2

WIS

10 +0

CHA

8 -1

Saving Throws: DEX +5, CON +4

Skills: Stealth +5

Damage Vulnerabilities: Fire, Lightning

Damage Resistances: Piercing and Slashing from Nonmagical Attacks that aren't Adamantine

Damage Immunities: Bludgeoning

Condition Immunities: Blinded, Exhaustion, Frightened, Stunned, Unconscious

Senses: Blindsight 80 ft. (blind beyond this radius), Passive Perception 10

Challenge Rating: 4

Amorphous. The sanquel can move through a space as narrow as 1 inch wide without squeezing.
Spider Climb. The sanquel can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Tracker. Once per week the sanquel or its creator can choose a creature it can see to be its target. it will know where the creature is at all times as long as they are both on the same plane of existence.

Actions

Multiattack. the sanquel makes one attack with its blood spear and one attack with its blood dart.
Blood Spear. Melee Weapon Attack: +4 to hit, reach 10 ft., 1 target. Hit: # (1d6 + 2) [piercing] damage plus the target must make a Constitution Saving throw DC 14. On a failure, the target takes an additional 1d6 necrotic damage. the sanquel will heal half the damage dealt by this attack.
Blood Dart. RangedWeapon Attack: +7 to hit, range 5/20 ft., 1 target. Hit: 5 (1d4 + 3) [piercing] damage.

Reactions

Grappling Form. When the Sanquel is hit with a melee attack it can use its reaction to grapple (escape Dc 14) the creature which struck it. While grappling the target, the sanquel has advantage on attack rolls against it.

They appear as amorphous blood, often taking the shape of humanoids. When attacking their enemies they shape their arms into sharp spears that can skewer their enemies. Once they do that they can draw the blood from their enemies to heal themselves.