Crystal Crawler Queen

False Appearance While the crystal crawler remains motionless, it is indistinguishable from a crystalline formation.

Grappler. The crystal crawler has advantage on attack rolls against any creature grappled by it.

Crystalline Hide. The crystal crawler has a naturally hard back due to the crystalline growth on its back, which has an HP value of 14 and is immune to all forms of damage aside from bludgeoning, which it is vulnerable to. Once the crystal is broken the crystal crawler loses 6 AC. However it can eat minerals and rocks to regrow its crystal over the span of a day. Once the crystal is regrown the crystal crawler regains its normal AC value.

Claw. Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit: 8 (2d6 + 2) slashing damage.

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 6 (1d8 + 2) piercing damage.

Acid Spit. Ranged Weapon Attack: +2 to hit, reach 30 ft., one target. Hit: 7 (2d6 + 1) acid damage.

Boulder Toss. Dexterity Saving Throw: DC 14, each creature in a 60-foot-long, 5-foot-wide Line. Failure: 11 (4d4+3) Bludgeoning damage. Success: Dodge attack.