Chaugnar

Charge. If the chaugnar moves at least 10 feet straight toward a target and then hits it with a gore attack on the same turn, the target takes an extra 9 (2d8) piercing damage. If the target is a creature, it must succeed on a DC 14 Strength saving throw or be pushed up to 10 feet away and knocked prone.

Elephant Recall. The chaugnar  can perfectly recall any path it has traveled.

Reckless. At the start of its turn, the chaugnar can gain advantage on all melee weapon attack rolls it makes during that turn, but attack rolls against it have advantage until the start of its next turn.

Multiattack. The chaugnar makes 2 attacks: either with its gore charge followed by the blood drain bite, or a stomp and claw combination.

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing damage.

Stomp. Melee Weapon Attack: +7 to hit, reach 5 ft., one prone creature. Hit: (2d10 + 7) bludgeoning damage.

Gore. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) piercing damage.

Blood Drain. Melee Weapon Attack: +5 to hit, reach 5 ft., one creature. Hit: 5 (1d8 + 3) piercing damage, and the chaugnar attaches to the target with the blood-sucking mouth at the end of its' trunk. While attached, the chaugnar doesn't attack. Instead, at the start of each of the chaugnar's turns, the target loses 5 (1d8 + 3) hit points due to blood loss. If the target fails a Strength check DC 12, the chaugnar remains latched to the victim each round until the Strength check is made, increasing in difficulty by 1 DC point per round. With a successful attack, the chaugnar receives regeneration of hit points equal to 1/2 the damage of the attack.

The chaugnar's trunk is strong enough to lift and fling medium sized humanoids, and if it is interrupted while feeding, it has a 70 percent chance of flinging the victim it is attached to and turning its attention to the attacker.