Blood Stone Half-Dragon Bee

Blood Stone Coagulation. Whenever the Blood Stone Half-Dragon Bee is healed through magic or through natural means, the creature is healed for the total amount of possible healing. The blood of the creature seems to coagulate at a heightened rate. Closing wounds at a pace where the eyes can see. 

Blood Stone Poison Mist: If the Blood Stone Half-Dragon Bee is exposed to open air its body emits a poison mist. When a creature starts its turn 15 feet from the Blood Stone Half-Dragon Bee it must make a DC 21 CON save or suffer 6d6 poison damage. A successful save means the creature takes half damage. If the Blood Stone Half-Dragon Bee is soaked in a liquid it does not emit its poison mist for one round. Where the liquid then evaporates from its body.

Innate Spellcasting. The Blood Stone Half-Dragon Bee spell casting wisdom is (spell save DC 21, +12 to hit with spell attacks). The Blood Stone Half-Dragon Bee can innately cast following spells, requiring no material components:
Cantrips (at will): word of radiance (17th level), sacred flame (17th level)
3/day (Each): cure wounds (fifth level), contagion
1/day: Holy Aura

Legendary Resistance (3/Day). If Blood Stone Half-Dragon Bee fails a saving throw, he can choose to succeed instead.

Multiattack. The Blood Stone Half-Dragon Bee can attack once with its bite and one attack with its sting.

Bite. Melee Weapon Attack: +15 to hit, reach 15 ft., one target. Hit: #31(4d8+ 11)slashing damage. 

Sting. Melee Weapon Attack: +15 to hit reach 15 ft., one target Hit: # (2d8 + 8) piercing + (6d6) Acid Damage. In addition if a creature is hit by this attack it must make a DC 18 CON Save or be paralyzed for one round. 

Blood Stone Breath: The Blood Stone Half-Dragon Bee exhales radiant mist.Each creature in that area must make a DC 21 CON saving throw, taking 66 (12d10) radiant  damage on a failed save, or half as much damage on a successful one.

Radiance (Costs One Action). The Blood Stone Half-Dragon Bee casts a cantrip.

Bite (Costs One Action). The Blood Stone Half-Dragon Bee makes a bite attack.

Blood Stone Magic (Costs Two Actions). The Blood Stone Half-Dragon Bee cast cure wounds or contagion if it still has the spell uses left.