Araxxor

Antimagic Chitin. Araxxor has advantage on saving throws against spells, and any creature making a spell attack against Arraxor has disadvantage on the attack roll. If Araxxor succeeds on its saving throw against a spell or a spell attack misses it, an additional effect might occur, as determined by rolling a d6:

1–2. If the spell affects an area or has multiple targets, it fails and has no effect. If the spell targets only Araxxor, it has no effect on the araxyte and is reflected back at the caster, using the spell slot level, spell save DC, attack bonus, and spellcasting ability of the caster.

3–4. No additional effect.

5–6. Araxxor’s chitin converts some of the chitin’s energy into a burst of destructive force. Each creature within 30 feet of Arraxor must make a DC 15 Constitution saving throw, taking 1d6 force damage per level of the spell on a failed save, or half as much damage on a successful one.

Poison Fangs Araxxor has 4 poison fangs. Whenever the araxyte takes 10 damage or more on a single turn, one of its fangs breaks. If even one fang remains, the araxyte regrows all dead ones within 1d4 days. If all its fangs break, Araxxor can no longer use his poison fang attack. Healing magic that restores limbs, such as the regenerate spell, can restore his fangs.

Multiattack. Araxxor makes as many Poison Fang attacks as it has poison fangs, all against the same target. If any of the attacks hit target must succeed on a DC 15 Constitution saving throw or take 2d10 poison damage and become poisoned for 1 minute.

Poison Fang. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit: 6 (1d6 + 3) bludgeoning damage.

Chitin Defense. Araxxor hardens his chitin, gaining a +4 bonus to AC until the next turn.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) slashing damage plus 3 (1d6) acid damage. If the target is a Large or smaller creature, it is grappled (escape DC 13). Until this grapple ends, Araxxor can bite only the grappled creature and has advantage on attack rolls to do so.

Acid Spray (Recharge 6). Araxxor spits acid in a line that is 30 feet long and 5 feet wide, provided that it has no creature grappled. Each creature in that line must make a DC 13 Dexterity saving throw, taking 10 (3d6) acid damage on a failed save, or half as much damage on a successful one.