Fiendish Auger

(Phandelver and Below: The Shattered Obelisk)

Huge construct, Neutral Evil

Armor Class15 (natural armor)
Hit Points85 (9d12 + 27)
Speed40 ft., burrow 30 ft.
STRDEXCONINTWISCHA
23 (+6) 10 (+0) 17 (+3) 6 (-2) 12 (+1) 5 (-3)
Saving Throws—
Skills—
Damage Vulnerabilities—
Damage Resistances—
Damage Immunitiesfire; poison
Condition Immunitiesblinded; charmed; exhaustion; frightened; paralyzed; petrified; poisoned; unconscious
Sensesblindsight 60 ft. (can't see beyond this radius), passive Perception 11
Languages—
Challenge5

Traits

Siege Monster.

The auger deals double damage to objects and structures.

Tunneler.

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

Actions

Flaming Drill.

Melee Attack Roll: +9 to hit, reach 5 ft., one target. Hit: 17 (2d10 + 6) piercing damage plus 7 (2d6) fire damage. If the auger moves at least 20 feet in a straight line toward the target immediately before the hit, the target takes an additional 11 (2d10) piercing damage, and if the target is a creature, it must succeed on a DC 17 Strength saving throw or have the prone condition.