Blade Monitor

Powerful. This creatures attacks can ignore the effects of natural, light, and medium armor and severely damage heavy armor. If the target is wearing light or no armor its attacks have an advantage.

Apex Predator. Beasts and monstrosities attacking it have a disadvantage and it has an advantage attacking them.

True soul. It can bond with a rider and/or friend. When one receives healing so does the other. Additionally the can communicate telepathically when within a mile of each other.

Primal rage. The Blade monitor can enter a rage, 1/day, where all attack against it have a disadvantage and all attacks it makes have an advantage.

Bladed defense. Any creature or item that attacks the blade monitor takes 20 (4d8+8) slashing and piercing damage.

Magical Identity. The Dragons attacks count as magical.

Amphibious. The Dragon can breath in air and water.

Purification. The dragon cannot be poisoned, get sick, get a disease, get a plague, and takes no damage from poison of acid.

Powerful Armor. The Blade Monitor will take no damage if you roll 13 or less to hit and will take 15 (1d10+5) less damage if you roll 14 to 16 to hit.

Resistant. The dragon can’t be killed in one hit and will reverse to half health it his with an attack powerful enough to kill it.

Multiattack. Melee weapon attack. The Blade Monitor makes one bite attack and two claw attacks. 

Swallow. The blade monitor makes one bite attack against a huge of smaller creature. If the attack hits the target is swallowed. The swallowed creature is blinded, prone, and restricted. The swallowed creature takes 18 (3d10+6) acid damage. The Blade Monitor can only swallow on creature at a time. If the creature dies while swallowed it make no death saving throw and the Blade Monitor can swallow another creature.

Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 19 (3d10+8) piercing damage.

Tail. Melee Weapon Attack: +10 to hit, reach 40 ft., one target. Hit: 27 (8d6+6) bludgeoning damage.

Claw. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 27 (8d6+6) slashing damage.

Gore. Melee Weapon Attack: +10 to hit, reach 30 ft., all targets in a line. Hit: 23 (4d10+6) piercing damage.

Ram. Melee Weapon Attack: +10 to hit, reach, 30 ft., all targets in a line. Hit: 23 (4d10+6) bludgeoning damage.

Pound. Melee Weapon Attack: +10 to hit ,all targets in a 120 ft. radius. Hit: 65 (12d10+10) force damage.

Impale. Melee Weapon Attack: +10 to hit, reach 40 ft., one target. Hit: (3d12+8) piercing damage. On natural 20 to hit, the target dies and makes no death saving throw.

Shard Breath. Ranged Weapon Attack: +15 to hit. The dragon exhales metal shards in a 90 ft cone. DC 30 constitution save. On a failed save, 55 (10d10+10) slashing and 55 (10d10+10)piercing damage. On a sucsesful one half the damage.

Steel laser. Ranged Weapon Attack: +15 to hit. The dragon exhales a silver laser in a 180 ft by 5 ft line. DC 30 constitution save. On a failed save, 55 (10d10+10) slashing, 55 (10d10+10) piercing, and 55 (10d10+10) radiant damage. And a on a successful one, half damage.