The couatl is rarely encountered in Dungeons and Dragons campaigns, partly because of its distinctly Mesoamerican flavor (most campaign settings remain hardily quasi-European) and partly because of its lawful good alignment (good monsters make bad enemies), but the winged, feathered serpent has been part of the game since the first Advanced Dungeons and Dragons Monster Manual. In fifth edition, it’s categorized as a celestial.
Couatls have exceptional ability scores across the board, but their Dexterity and Wisdom are especially extraordinary. Their mental ability scores are higher on average than their physical ability scores, suggesting a preference for spellcasting over messy tooth-and-claw conflict (though their spell repertoire turns out not to support this preference especially well). Their 30-foot slithering speed is put to shame by their 90-foot flying speed; this, plus an awesome natural armor class of 19 and an immunity to physical damage from nonmagical weapons, implies that if they do engage in physical combat, they’ll most often hover in the air, dive-bomb their targets, then fly back out of reach without concern for opportunity attacks. (more…)