Biterlone

Legendary Resistance (3/Day). If dragon fails a saving throw, it can choose to succeed instead.

Tapeworm Neck. The Dragon's lightning Breath, tapeworm, and bite attack's have an additional reach of 60 ft.

Superspeed Regeneration. Dragon heals 1d20 hit points at the start of each of its turns.

Bite. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 18 (2d10 + 7) piercing damage plus 5 (1d10) lightning damage.

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 14 (2d6 + 7) slashing damage.

Tail. Melee Weapon Attack: +7 to hit, reach 30 ft., one target. Hit: 16 (2d8 + 7) bludgeoning damage.

Tapeworm. Melee Weapon Attack: +7 to hit, reach 60 ft., one target. Hit: 36 (3d12) psychic damage, the target must make a DC 17 Wisdom saving throw, being incapacitated for 1d4 rounds on failure.

Frightful Presence. Each creature of dragon's choice that is within 300 feet of dragon and aware of it must succeed on a DC 16 Wisdom saving throw or become frightened for the duration that they are in the Astral Sea. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to dragon's Frightful Presence for the next 24 hours.

Lightning Breath (Recharge 5–6). The dragon exhales lightning in a 180-­foot line that is 10 feet wide. Each creature in that line must make a DC 18 Dexterity saving throw, taking 106 (16d10) lightning damage on a failed save, or half as much damage on a successful one.

The dragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The dragon regains spent legendary actions at the start of its turn.

Detect. The dragon makes a Wisdom (Perception) check.

Tail Attack. The dragon makes a tail attack.

Wing Attack (Costs 2 Actions). The dragon beats its wings. Each creature within 10 feet of the dragon must succeed on a DC 16 Intelligence saving throw or take 14 (2d6 + 7) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.