Shadow Dancer

Medium humanoid (elf), Neutral

Armor Class 15 ({@item studded leather armor|phb|studded leather})

Hit Points 71 (13d8 + 13)

Speed 30 ft.

STR 12 (+1)

DEX 16 (+3)

CON 13 (+1)

INT 11 (+0)

WIS 12 (+1)

CHA 12 (+1)

Saving Throws DEX +6, CHA +4

Skills Stealth +6

Damage Resistances necrotic

Condition Immunities charmed, exhaustion

Senses darkvision 60 ft., passive Perception 11

Languages Common, Elvish

Challenge 7

Fey Ancestry. The shadow dancer has advantage on saving throws against being charmed, and magic can't put it to sleep.

Shadow Jump. As a bonus action, the shadow dancer can teleport up to 30 feet to an unoccupied space it can see. Both the space it teleports from and the space it teleports to must be in dim light or darkness. The shadow dancer can use this ability between the weapon attacks of another action it takes.

Actions

Multiattack. The shadow dancer makes three spiked chain attacks.

Spiked Chain. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 10 (2d6 + 3) piercing damage, and the target must succeed on a DC 14 Dexterity saving throw or suffer one additional effect of the shadow dancer's choice:

The target is grappled (escape DC 14) if it is a Medium or smaller creature. Until the grapple ends, the target is restrained, and the shadow dancer can't grapple another target.
The target is knocked prone.
The target takes 22 (4d10) necrotic damage.

Source

Mordenkainen's Tome of Foes, p. 225