Armor Class 14 (natural armor)
Hit Points 52 (7d8 + 21)
Speed 30 ft., swim 30 ft.
Skills Perception +2
Damage Resistances poison
Senses darkvision 60 ft., passive Perception 12
Languages understands Draconic but can't speak it
Challenge 2
Amphibious. The guard drake can breathe air and water.
Multiattack. The drake attacks twice, once with its bite and once with its tail.
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage.
Tail. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) bludgeoning damage.
Volo's Guide to Monsters, p. 158