Cactaur

Magic Resistance. The cactaur has advantage on saving throws against spells and other magical effects.

Cunning Action. On each of its turns, the cactaur can use a bonus action to take the Dash, Disengage, or Hide action.

Evasion. If the cactaur is subjected to an effect that allows it to make a Dexterity saving throw to take only half damage, the cactaur instead takes no damage if it succeeds on the saving throw, and only half damage if it fails.

100 Needles. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 1d100 piercing damage.

Uncanny Dodge. The cactaur halves the damage that it takes from an attack that hits it. The cactaur must be able to see the attacker.