Swarm of Compsognathus 2014
CR 1 beast
Medium beast, unaligned
STR6 (-2)
DEX14 (+2)
CON12 (+1)
INT4 (-3)
WIS10 (+0)
CHA5 (-3)
Grasslands Camouflage.
The compsognathus has advantage on Dexterity (Stealth) checks made to hide in tall grass.
Swarm.
The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a Tiny compsognathus. The swarm can’t regain hp or gain temporary hp.
Actions
Bite.
Melee Weapon Attack: +4 to hit, reach 0 ft., one creature in the swarm's space. Hit: 14 (4d6) piercing damage, or 7 (2d6) piercing damage if the swarm has half of its hp or fewer.
Source: Tome of Beasts 2 (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details