Actions

Multiattack

The landwyrm makes one bite attack and two tail attacks.  

Bite

Melee Weapon Attack: +11 to hit, reach 10ft., one target. Hit 18 (2d10 + 6) piercing damage plus 5 (1d10) acid damage.  

Tail

Melee Weapon Attack: +11 to hit, reach 15ft., one target. Hit 11 (1d8 + 6) bludgeoning damage. If the target is a creature, it must succeed on a DC 17 Strength saving throw or be knocked prone.  

Frightful Presence

Each creature of the landwyrms's choice that is within 120 feet of the landwyrm and aware of it must succeed on a DC 17 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 landwyrm's Frightful Presence for the next 24 hours.  

Breath Weapon (Recharges 5-6)

The landwyrm uses one of the following breath weapons.  

Acid Breath. The landwyrm exhales acid in a 90-foot cone. Each creature in that area must make a DC 19 Dexterity saving throw, taking 45 (10d8) acid damage on a failed save, or half as much damage on a successful one.

Acidic Spittle. The landwyrm exhales acidic adhesive in a 90-foot cone. Each creature in that area must succeed on a DC 19 Constitution saving throw or be blinded. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Bonus Actions

Rush

The landwyrm moves up to its movement speed without provoking attacks of opportunity.

Legendary Actions

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

Prehistoric Rage (Costs 2 Actions)

The landwyrm uses its Rush or Spellcasting.  

Tail Attack

The landwyrm makes a tail attack.  

Erupting Slam (Costs 2 Actions)

The landwyrm forcefully slams the ground. Each creature within 20 feet of the landwyrm must succeed on a DC 17 Dexterity saving throw or take 10 (2d10) bludgeoning damage and be knocked prone. The landwyrm can then burrow up to half its burrow speed.