Guildmaster's Guide to Ravnica
In the sprawling city of Ravnica, where "open road" seems like a contradiction and "open plain" is sheer nonsense, centaurs nevertheless retain a love of wide spaces and the freedom to travel. As much as they can, centaurs run-in wide plazas, spacious parks, and expanses of rubble and ruin. They race the wind, hooves thundering and tails streaming behind them, until the next wall looms in their path and brings them to a stop.
Centaurs have the upper bodies, down to the waist, of muscular humans, displaying all the human variety of skin tones and features. Their ears are slightly pointed, but their faces are wider and squarer than those of elves. Below the waist, they have the bodies of small horses, with a similar range of coloration - from various shades of chestnut or bay to dappled or even zebra like striped patterns. Most centaurs style their hair and tails in a similar way. Selesnya centaurs favor long, flowing hair. Gruul centaurs cut their hair in rough, spiky styles.
The upper bodies of centaurs are comparable to human torsos in size, and their lower equine bodies average about 4 feet tall at the withers. Though they are smaller than a human rider mounted on a horse, they fill similar roles as cavalry warriors, messengers, outriders, and scouts.
Fey: A Centaur's type is fey, rather than humanoid.
Charge: If Centaurs move at least 30 feet straight toward a target and then hit it with a melee weapon attack on the same turn, they can immediately follow that attack with a bonus action, making one attack against the target with their hooves.
Hooves: Centaurs' hooves are natural melee weapons, which they can use to make unarmed strikes. If the Centaur hits with them, they deal bludgeoning damage equal to 1d4 + Strength modifier, instead of the bludgeoning damage normal for an unarmed strike.
Equine build: Centaurs count as one size larger when determining their carrying capacity and the weight they can push or drag. In addition, any climb that requires hands and feet is especially difficult for them because of their equine legs. When they make such a climb, each foot of movement costs them 4 extra feet, instead of the normal 1 extra foot.
Survivor: Centaurs have proficiency in one of the following skills: Animal Handling, Medicine, Nature, or Survival.