The rotting hides and molding straw stuffing of skitterstitches are ideal nesting grounds for vermin and insect swarms. Any animal swarm sharing a space with a skitterstitch gains fast healing 3.
Additionally, if a creature deals at least 10 piercing or slashing damage to the skitterstitchstitch, the swarm can use its swarming bites Strike (or similar attack) against the attacker as a reaction.

Pest Haven

Skitterstitches host a @UUID[Compendium.pf2e.pathfinder-monster-core.Actor.Spider Swarm] within themselves, which erupts out when the Skitterstitch is destroyed

Spider Swarm Host

The skitterstitch makes a blade Strike against an animal or humanoid. On a success, the skitterstitch slices a long strip of flesh from the target; if the skitterstitch dealt damage, it deals an additional 1d6 persistent bleed damage.

Flay

Saving Throw DC 23 Fortitude
Maximum Duration 6 rounds
Stage 1 1d10 poison damage, <a href="/condition/off-guard">Off Guard</a>, and <a href="/condition/clumsy">Clumsy 1</a> (1 round)
Stage 2 1d10 poison damage, off-guard, and <a href="/condition/clumsy">Clumsy 2</a> (1 round)

Skitterstitch Venom

Requirements The skitterstitch hasn&#x27;t used this ability since the last time it successfully used its Flay ability
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Effect The skitterstitch sews flayed flesh to its body to seal tears and rents. The skitterstitch regains 8 Hit Points.

Stitch Skin

The rotting hides and molding straw stuffing of skitterstitches are ideal nesting grounds for vermin and insect swarms. Any animal swarm sharing a space with a skitterstitch gains fast healing 3.
Additionally, if a creature deals at least 10 piercing or slashing damage to the skitterstitchstitch, the swarm can use its swarming bites Strike (or similar attack) against the attacker as a reaction.
@UUID[Compendium.pf2e.bestiary-effects.Item.Effect: Pest Haven]

Saving Throw @Check[fortitude|dc:23|traits:poison]
Maximum Duration 6 rounds
Stage 1 @Damage[1d10[poison]] damage, @UUID[Compendium.pf2e.conditionitems.Item.Off-Guard], and @UUID[Compendium.pf2e.conditionitems.Item.Clumsy]{Clumsy 1} (1 round)
Stage 2 @Damage[1d10[poison]] damage, off-guard, and @UUID[Compendium.pf2e.conditionitems.Item.Clumsy]{Clumsy 2} (1 round)

Requirements The skitterstitch hasn't used this ability since the last time it successfully used its Flay ability
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Effect The skitterstitch sews flayed flesh to its body to seal tears and rents. The skitterstitch regains @Damage[8[healing]] Hit Points.