Ankheg (Action-Oriented)

Multifaceted. The Ankheg is immune to being flanked.

Caustic Blood. The first time the Ankheg is hit by a melee attack in a round, it sprays acid from its wounds, causing all creatures within 5ft to make a Dexterity saving throw, DC 13. On a failure, a creature takes 3 (1d6) acid damage.

Ferocious Multiattack. The Ankheg makes two Claw attacks, followed by one Bite attack. If both Claw attacks hit the same target, the Bite attack has advantage on that target.

Claw. Melee Weapon Attack; +5 to hit, reach 10ft., one target. Hit: 10 (2d6+3) slashing damage. If the target is Large or smaller, it must succeed on a Strength saving throw, DC 13, or be pulled 5ft toward the Ankheg.

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, the ankheg can bite only the grappled creature and has advantage on attack rolls to do so.

Acid Spray (Recharge 6). The ankheg 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.

Acid Glob. When a creature leaves the Ankhegs space, it can spit a glob of acid at them, sticking them in place. The affected creature must make a Constitution saving throw (DC 13), or take 10 (3d6) acid damage, and have their movement speed reduced to 0 until the end of their next turn.

Pressurized Carapace. Upon being reduced to 0 hit points, the Ankheg explodes, forcing all creatures within 20ft to make a Dexterity saving throw, DC 16. On a failure, a creature takes 3 (1d6) bludgeoning damage, as well as 18 (5d6) acid damage.

Villian Actions. To be taken after the end of another creature's turn, once per round, in order.

Burrow. The Ankheg immediately burrows 20ft.

Pull. The Ankheg makes a Bite attack on a creature that it is underneath. This attack is made at advantage. If it hits, it pulls the creature underground, grappling it in its jaws.

Acid Expulsion. The Ankheg pushes acid through all of its wounds, causing all ceatures within 30ft to make a Dexterity saving throw, DC 16. On a failure, a creature takes 22 (6d6) acid damage, and its speed is reduced to 0 until the end of the Ankhegs next turn.