Cacterian Brawler

Thorny Body. The Cacterian's body is covered in prickly spines. When a creature makes contact with it, these spines break off into their skin, causing them to take 1 (1d4-1) piercing damage.

Stalwart. The Cacterian has advantage on saving throws made to avoid Exhaustion. 

Speak with Animals and Plants. The Cacterian can speak to small animals and plants as though they share a language.

Reckless Attack. When the Cacterian takes the attack action on its turn, it can choose to attack recklessly. Doing this gives all its attacks advantage for the rest of this turn, but all attacks made against it are also made at advantage until the start of its next turn.

Multiattack. The Cacterian makes 2 Projectile Spine attacks, or 2 Slam attacks.

Slam. Melee Weapon Attack: +5 to hit, reach 5 ft., 1 target. Hit: 6 (1d6 + 3) bludgeoning damage, plus 1 piercing damage. 

Projectile Spine. Ranged Weapon Attack: +2 to hit, range 15/60 ft., 1 target. Hit: 2 (1d4) damage.

Cacterian Rage. As a bonus action, the Cacterian enters a rage, and all creatures other than itself within 10 ft. of it take 2 fire damage. While raging it has resistance to Bludgeoning, Piercing, and Slashing damage, advantage on Strength based checks and saving throws, and it deals an additional 2 bludgeoning damage on its slam attacks. Additionally, the piercing damage taken from its Thorny Body, Projectile Spines, and Slam all increase by 2 (1d4).