Large Monstrosity, Unaligned
Armor Class 14 Initiative +0 (10) Hit Points 45 (6d10 + 12) Speed 30 ft., Burrow 10 ft.
Saving Throws Str +3, Dex +0, Con +2, Int −5, Wis +1, Cha −2
Senses Darkvision 60 ft., Tremorsense 60 ft.; Passive Perception 11
Languages None
Challenge Rating 2
The ankheg can burrow through solid rock at half its Burrow Speed and leaves a 10-foot-diameter tunnel in its wake.
Melee Attack Roll: +5 (with Advantage if the target is Grappled by the ankheg), reach 5 ft. Hit: 10 (2d6 + 3) Slashing damage plus 3 (1d6) Acid damage. If the target is a Large or smaller creature, it has the Grappled condition (escape DC 13).
Dexterity Saving Throw: DC 12, each creature in a 30-foot-long, 5-foot-wide Line. Failure: 14 (4d6) Acid damage. Success: Half damage.