Crystal Worm

Burrowing Monster

The crystal worm can burrow through solid rock, leaving behind a 5-foot-diameter tunnel. The tunnel partially collapses 1 minute after the worm passes through.

Crystal Absorption

Whenever the worm takes radiant, lightning, or force damage, it absorbs some of the energy. Until the end of its next turn, its next Crystal Beam deals an additional 2d8 damage of the triggering damage type.

Multiattack

The crystal worm makes one Bite attack and one Crystal Claw attack.

Bite

Melee Weapon Attack: +8 to hit, reach 10 ft., one target.
Hit: 16 (2d10 + 5) piercing damage plus 7 (2d6) radiant damage.

If the target is a Large or smaller creature, it must succeed on a DC 16 Strength saving throw or be grappled (escape DC 16).

Crystal Claw

Melee Weapon Attack: +8 to hit, reach 10 ft., one target.
Hit: 12 (2d6 + 5) slashing damage plus 4 (1d8) radiant damage.

Crystal Shard Burst (Recharge 4–6)

The worm violently shakes its body, launching crystals in every direction.

Each creature within 20 feet of the worm must make a DC 15 Dexterity saving throw, taking 21 (6d6) piercing damage plus 10 (3d6) radiant damage on a failed save, or half as much on a success.

The ground within the area becomes covered in razor-sharp crystal fragments and is difficult terrain until the end of the worm’s next turn.

Burrow

The worm moves up to half its burrowing speed without provoking opportunity attacks.