: The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny insect. The swarm can't regain Hit Points
or gain Temporary Hit Points
: Melee Weapon Attack: +3 to hit, reach 0 ft., one target in the swarm's space. Hit: 10 (4d4) piercing damage, or 5 (2d4) piercing damage if the swarm has half of its Hit Points
A creature reduced to 0 Hit Points
by a swarm of centipedes is stable but Poisoned
for 1 hour, even after regaining Hit Points
, and Paralyzed
in this way.