Kasny

Tiny undead, neutral evil

Armor Class 12

Hit Points 7 (2d4 + 2)

Speed 30 ft., climb 30 ft.

STR 6 (−2) · DEX 14 (+2) · CON 12 (+1) · INT 6 (−2) · WIS 10 (+0) · CHA 5 (−3)

Skills Stealth +4

Damage Vulnerabilities Radiant

Damage Resistances Necrotic

Condition Immunities Charmed, Exhaustion

Senses Darkvision 60 ft., passive Perception 10

Challenge 1/8

Traits

Pack Tactics. The Kasny has advantage on an attack roll against a creature if at least one of the Kasny's allies is within 5 feet of the creature and the ally isn't incapacitated.

Latch On. After a successful bite attack, the Kasny attaches itself to the target. While attached, the Kasny moves with the target and doesn't require an attack roll to bite. Instead, it automatically deals bite damage at the start of its turn. The Kasny can be removed by an action from the target or an adjacent ally, requiring a successful DC 10 Strength check.

Frenzied Persistence. If the Kasny takes damage while attached, it must succeed on a DC 10 Constitution saving throw or detach from the target. However, it has advantage on this saving throw if there are other Kasny within 5 feet.

Call for Aid. When reduced to half its hit points or fewer, the Kasny emits a disturbing, high-pitched squeal audible within 120 feet. Within 1d4 rounds, 1d4 additional Kasny arrive to join the fight.

Actions

Claw. Melee Weapon Attack: +4 to hit, reach 5 ft., one target.

Hit: 4 (1d4 + 2) slashing damage.

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target.

Hit: 4 (1d4 + 2) piercing damage plus 2 (1d4) necrotic damage, and the target's hit point maximum is reduced by an amount equal to the necrotic damage taken. This reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hit point maximum to 0.

Lore

Small vampiric creatures of undefined appearance, attacking travelers in swarms.

At first glance, Kasny are small beings but quite clever and persistent. They almost never act alone, as they are too weak to handle a victim on their own—no matter who it is—they always attack in groups, and this is their main danger.

There is no precise information about what Kasny look like, as few have survived encounters with a group of these creatures. Rumor has it that they are small beings whose legs somewhat resemble those of spiders, only completely smooth, and their faces have numerous small teeth, somewhat like a piranha.

From The Witchwood Bestiary 5E, p. 52 · Fern Flower Press