Large Construct
Armor Class 20
Hit Points 210 (20d10+100)
Speed walk +30
Challenge 14
Damage Immunities fire, poison, psychic; damage from nonmagical, non-adamantine weapons
Condition Immunities charmed, fatigue, frightened, paralyzed, petrified, poisoned
Senses darkvision 120 ft., passive Perception 11
Languages understands the languages of its creator but can't speak
Fire Absorption. When the guardian is subjected to fire damage, it instead regains hit points equal to the fire damage dealt.
Immutable Form. The guardian is immune to any effect that would alter its form.
Magic Resistance. The guardian has advantage on saving throws against spells and magical effects.
Constructed Nature. Guardians dont require air, sustenance, or sleep.
Multiattack. The guardian makes two sword attacks.
Sword. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 29 (4d10 + 7) slashing damage.
Poison Breath (Recharge 5-6). The guardian exhales poisonous gas in a 15-foot cone. Each creature in the area makes a DC 18 Constitution saving throw taking 45 (10d8) poison damage on a failure or half damage on a success.
Deflection. When missed by a ranged attack by a creature the guardian can see, the guardian redirects the attack against a creature within 60 feet that it can see. The original attacker must reroll the attack against the new target.
Source: Level Up Advanced 5e Monstrous Menagerie · OGL/Open