Bajadasaurus

Stomp. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 27 (5d8 + 5) bludgeoning damage, and the target must succeed on a DC 14 Strength saving throw or be knocked prone.

Tail. Melee Weapon Attack: +8 to hit, reach 20 ft., one target. Hit: 32 (6d8 + 5) bludgeoning damage.

Neck-Spikes. Melee Weapon Attack: +8 to hit, reach 15 ft., one target. Hit: 18 (4d8 + 5) piercing damage. If the target is a creature, it must succeed on a DC 13 Constitution saving throw or have its speed decreased by 5 feet and be minorly vulnerable until the end of its next turn.   Whenever an attack hits a creature that is minorly vulnerable, the attack deals an additional 1d6 damage of its primary damage type.