Conqueror Worm

• Servant of Madness. The conqueror worm can sense any creature within two miles that is suffering from any form of madness. It is drawn to such creatures and regards them as allies.
• Tunneler. The conqueror worm can burrow through solid rock at half its burrow speed and leaves a 5-foot-diameter tunnel in its wake.
  • In combat after taking half damage, as an Action, the Conqueror Worm burrows (Disengage) into the ground and moves to another location (drawn to the movement of another enemy). It remains hidden underground until its next turn.

Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 9 (1d10 + 4) piercing damage. If the target is hit and a Medium creature or smaller, it must succeed on a DC 12 Dexterity saving throw or be swallowed by the worm. A swallowed creature is blinded and restrained, it has total cover against attacks and other effects outside the worm, and it takes 5 (2d4) acid damage at the start of the worm’s turns. The worm can have only one target swallowed at a time. If the worm dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 10 feet of movement, exiting prone. If the target is killed while swallowed, the worm regurgitates the corpse as a reaction. That corpse returns as a Worm Fiend at the start of the worm's next turn. 

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