Armor Class 18 (natural armor)
Hit Points 27 (5d8 + 5)
Speed 30 ft., climb 30 ft.
Senses darkvision 60 ft., passive Perception 10
Languages Kraul, understands Common but can't speak it
Challenge 1/2
Hive Mind. The kraul is immune to the charmed and frightened conditions while within 30 feet of at least one other kraul.
Pack Tactics. The kraul has advantage on an attack roll against a creature if at least one of the kraul's allies is within 5 feet of the creature and the ally isn't incapacitated.
Spider Climb. The kraul can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Spear. Melee or Ranged Weapon Attack: +4 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 5 (1d6 + 2) piercing damage, or 6 (1d8 + 2) piercing damage if used with two hands to make a melee attack.
Guildmaster's Guide to Ravnica, p. 213