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Stop the Bore Before the Monolith Breaks - AI-generated fantasy Encounter

Stop the Bore Before the Monolith Breaks

Encounters
Protect · Moderate · 6 players, level 18

Stop the Bore Before the Monolith Breaks

If the monolith shatters, the bore-site’s heat and structural supports fail with it.

Run the fight

Round
1
6–8 rounds
Creatures
9
Moderate

This round

A 20-foot platform section drops. Each creature on it makes a Dexterity save or falls 60 feet, takes bludgeoning damage, and lands prone.

Win The control rail is destroyed

Lose The monolith reaches 6 cracks

Party 6 players, level 18

System D&D 2024

Cheat sheet

Protect

Stop the drill before the monolith breaks: destroy the control rail or drive off the Trench-Lord and its crew.

Win

The control rail is destroyed, or the Trench-Lord and Wardens are driven off before the monolith shatters.

Lose

The monolith reaches 6 cracks, or the party abandons the platform while the drill remains active.

If it goes badly: The Trench-Lord covers the Wardens as they retreat along the shaft braces; the drill keeps running.

Forces

  • 1 × Abyssal Trench-LordAC 19 · HP 312 · CR 17
  • 6 × Resonant Crystal ScuttlerAC 16 · HP 178 · CR 8
  • 2 × Vanguard Siphon-WardenAC 17 · HP 110 · CR 6

Rounds

  • 1+A 20-foot platform section drops.

Read aloud

Say this

The drill bucks beneath your boots, showering the platform with hot grit as a crystal-backed Trench-Lord surges up from the shaft. Scuttlers skitter over the monolith, their claws ringing against its surface, while two Wardens haul at the control rail. The platform groans, then tilts toward the dark below.

Forces

3

  • Abyssal Trench-Lord

    Bruiser

    1 of them
    AC
    19
    HP each
    312
    CR
    17

    Legendary Resistance

    Opens
    Rushes the nearest visible character and batters them away from the control rail.
    Targets
    The nearest character threatening a Warden or the drill.
    Flees
    Withdraws if reduced below 40 HP or both Wardens are down.
    Open the monster

  • Resonant Crystal Scuttler

    Skirmisher

    6 of them
    AC
    16
    HP each
    178
    CR
    8

    Crystal Retreat

    Opens
    Scuttle onto the monolith and strike it to advance the Crack Track.
    Targets
    Characters standing between them and the monolith.
    Flees
    Flee when the Trench-Lord retreats or the control rail is destroyed.
    Open the monster

  • Vanguard Siphon-Warden

    Controller

    2 of them
    AC
    17
    HP each
    110
    CR
    6

    Rig Authority

    Opens
    One operates the control rail; the other attacks characters trying to reach it.
    Targets
    Characters attacking the rail or disrupting the drill.
    Flees
    Retreat if the Trench-Lord falls and the control rail is destroyed.
    Open the monster

What happens

6–8 rounds
  1. 1+

    Initiative count 20 each round, unless the control rail has been destroyed and its 3-round pause is active.This round

    A 20-foot platform section drops. Each creature on it makes a Dexterity save or falls 60 feet, takes bludgeoning damage, and lands prone.

  2. ·

    The Crack Track reaches 3.

    The monolith rings sharply. Creatures within 30 feet make a Constitution save or become deafened.

  3. ·

    The Crack Track reaches 6. In Scene 3, this save automatically fails.

    The monolith shatters in a burst of heat: creatures in the scene take fire damage, or half on a successful Dexterity save.

The battlefield

Zones

  1. 1

    Bore platform25 ft

    The narrow lift platform surrounds the monolith and control rail; its grated floor hums underfoot.

  2. 2

    Support frame25 ft

    A buckled support frame and dangling chains crowd this edge of the shaft; the drill’s hot breath smells of scorched mineral.

  3. 3

    Shaft edge25 ft

    The open shaft drops 60 feet below the platform. Loose grit rattles down into darkness whenever the drill pulses.

What the party can use

The control rail has AC 15 and 30 HP; destroying it pauses the drill and Bore Collapse for 3 rounds.
A creature can use an action and succeed on a DC 22 Strength (Athletics) check to brace the platform section due to drop next.
Track the monolith’s Crack Track from 0 to 6. It gains 1 crack when the monolith takes damage, a frame falls on it, or a Huge or larger creature ends its movement near it.

Scaling

XP budget46,000 of 85,200 XP
Weaker

Moderate

One fewer Vanguard Siphon-Warden

Remove 2 Resonant Crystal Scuttlers; the remaining crew breaks off when the Trench-Lord falls.
As written

Moderate

Stronger

High

One more Abyssal Trench-Lord

Add 2 Resonant Crystal Scuttlers; they begin on the platform and immediately target the monolith.

Treasure

The Wardens carry the control rail’s access key and a scorched route slate.

Media

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