Cave Wyvern Queens

A cave wyvern queen is a dangerous dragon of the underdark. They live in Cave Wyvern Hives and are lazy beings that command the wyverns to bring them food, and only have the purpose to kill threats that the others cannot handle and lay eggs. A cave wyvern egg is extremely rare and valuable, and can be sold for 500 gp. Upon entering the queen's quarters, the queen will become aggressive if it notices the players. It will then enter initiative, and will attempt to kill all of the players. It will protect it's egg at all costs.

STATS:

HP: 189 (18d10 + 90)

AC: 17

Size: Huge

Alignment: unaligned

Speed: Walk 40 feet, Fly 120 feet, Climb 40 feet.

DEX:25(+7)

STR: 20 (+5)

CON: 17 (+3)

INT: 5 (-3)

WIS: 12 (+1)

CHA: 3 (-4)

Saving Throws: DEX+10

Skills: Stealth +10, Acrobatics +10, Perception +2

Damage Immunities: Acid, Poison

Senses: Blindsight 120 feet, Passive perception 14

languages: Draconic

challenge:13 (10,000 XP)

ACTIONS:

Multiattack: The queen can use its frightful presence. It then makes Three attacks: One with its bite and Two with its claws.

Bite: +11 to hit, reach 10 feet, hit: 17 (2d10 + 6) piercing damage plus 7 (2d6) poison damage

cCaw: +11 to hit, reach 5 feet, hit: 13 (2d6 + 6) slashing damage

Tail: +11 to hit, reach 15 feet, hit: 15 (2d8 + 6) bludgeoning damage

Frightful presence: Each creature of the queen's choice that is within 120 feet of the queen and aware of it must succeed on a DC 16 wisdom saving throw or become frightened for 1 minute. 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 the dragon's frightful presence for the next 24 hours.

Acid b\Breath (Recharge 5-6): the queen exhales acid in a 45-foot cone. Each creature in that cone must make a DC 18 dexterity saving throw, taking 49 (14d6) acid damage on a failed save, or half as much damage on a successful one.

LEGENDARY ACTIONS: The queen can take 1 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 queen regains spent legendary actions at the start of its turn.

Detect: The queen makes a wisdom (Perception) check.

Tail attack: The queen makes a tail attack.