Swarm of Rot-Paper

Ecology
A Swarm of Rot-Paper consists of thousands of corrupted books, scrolls, and loose parchment from the Overgrown Athenaeum. These documents have been assimilated by the Emerald Rot's hive-mind, turning them into a defensive mechanism for the Rot-Mind. They move through the air with a terrifying, wet rustle, often resembling a flock of sickly green birds.
Combat Mechanics
The swarm deals slashing damage and can "Infect" targets with Rot-spores on a critical hit, causing the poisoned condition. They are highly vulnerable to fire, but fire damage dealt to the swarm spreads to any nearby wooden or paper structures. The swarm can "Blanket" a target, blinding them and dealing necrotic damage at the start of their turn.
Loot
Searching the remains of a swarm may yield "Corrupted Parchment." While dangerous to handle, this parchment is a potent material for scribing high-level necrotic or nature-based spell scrolls.