Swarm of Bats
large beast, unaligned
AC 12 (natural armor)
Initiative +2 (12)
HP 11 (2d10)
Speed 5 ft., Fly 30 ft.
ModSaveSTR5-3-3DEX15+2+2CON10+0+0
ModSaveINT2-4-4WIS12+1+1CHA4-3-3
Senses Blindsight 60 ft. Passive Perception 11
CR 1/4 (XP 50; PB +2)
Traits
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 bat. The swarm can't regain Hit Points or gain Temporary Hit Points.
Actions
Bites. Melee Attack Roll: +4, reach 5 ft. 5 (2d4) Piercing damage, or 2 (1d4) Piercing damage if the swarm is Bloodied.
Swarm of Bats is from the System Reference Document 5.2.1 (“SRD 5.2.1”) by Wizards of the Coast LLC, used under the Creative Commons Attribution 4.0 International License. Full attribution is on the Licenses & Attribution page.