Disarming screech (Recharge1/2). Once per turn this creature can scream. All creatures within 20 foot of the Tunneler, that can hear it, can make a DC 15 Constitution saving throw or have disadvantage on attack rolls, Wisdom(Perception) checks and have their passive perception score reduced by 3 for 1d4 turns.
Legendary Resistance (3/day). If the Tunneler fails a saving throw, it can choose to succeed instead.
Bite. +5 to hit. One target. Hit: 10(3d6) piercing damage and the creature is grappled (escape DC 15).
The Ancient Tunneler can take 4 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 creatures turn. The Ancient Tunneler regains all spent legendary actions at the end of its turn.
Fire Spines(costs 2 actions).This creature ejects spines that cover its body. Each creature within a 30 foot cube must succeed on a DC 13 Dexterity saving throw or take 9(3d8) piercing damage + 7(2d6) poison damage and are knocked prone.
Bite. This creature makes one bite attack.
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