Couatl is a Medium celestial with lawful good alignment and Challenge Rating 4 in the 2024 SRD. This stat block includes AC 19, 60 hit points, speeds, traits, and actions.
Bite - Melee Attack Roll: +7, reach 5 ft. Hit: 11 (1d12 + 5) Piercing damage, and the target has the Poisoned condition until the end of the couatl’s next turn.
Constrict - Strength Saving Throw: DC 15, one Medium or smaller creature the couatl can see within 5 feet. Failure: 8 (1d6 + 5) Bludgeoning damage. The target has the Grappled condition (escape DC 13), and it has the Restrained condition until the grapple ends.
Spellcasting - The couatl casts one of the following spells, requiring no spell components and using Wisdom as the spellcasting ability (spell save DC 15):