Great Kroom, Purple Worm

Gargantuan Monstrosity, Unaligned

AC: 18

Initiative: +1 (11)

HP: 247

Speed: 50 ft., burrow 30 ft.

STR
10 (+0)
DEX
13 (+1)
CON
12 (+1)
INT
11 (+0)
WIS
11 (+0)
CHA
12 (+1)

CR: 15 (XP 13,000; PB +5)

Tunneler.

The worm can burrow through solid rock at half its burrow speed and leaves a 10-foot-diameter tunnel in its wake.

Actions

Multiattack.

The worm makes two attacks:

Bite.

Melee Weapon Attack: +14 to hit, one target. Hit: 22 (3d8) piercing damage. Target must make a DC 19 Dexterity save, or be swallowed by the worm!

Tail Stinger.

Melee Weapon Attack: +14 to hit, one creature. Hit: 19 (3d6 + 9) piercing damage Target must make a DC 19 Constitution save, or take 42 (12d6) poison damage.

Find this creature in the encounter builder

Great Kroom, Purple Worm

Source: Adventure with Muk, p. 33 - Licenses and attribution