Huge Construct, Lawful Evil
Armor Class 22 Adaptive Arcane Plating
Hit Points 340 (27d12 + 162)
Speed 40 ft., Fly 20 ft.
STR
28 (+9)
DEX
14 (+2)
CON
22 (+6)
INT
22 (+6)
WIS
18 (+4)
CHA
18 (+4)
Saving Throws STR +31, DEX +10, CON +25, INT +25, WIS +21, CHA +12
Skills Arcana +24, Investigation +32, Perception +24
Damage Resistances Acid, Cold, Fire, Force, Lightning, Radiant
Senses Truesight, Passive Perception 24
Languages Common, Deep Speech
Challenge 23 (50,000 XP)
Proficiency Bonus +7
Traits

Arcane Machine Intelligence:

The construct cannot be surprised.

It always knows the location of creatures that cast spells within 120 feet.


Adaptive Armor:

Whenever the construct takes damage from a damage type, it gains resistance to that damage until the start of its next turn.

This effect cannot grant immunity.


Master of Lesser Constructs:

Constructs within 60 feet:

  • Gain +2 AC
  • Add +2 to attack rolls
  • May use reactions to move half speed

Arcane Containment Field

Creatures beginning their turn within 20 feet must succeed on a DC 19 Constitution Save or have concentration checks made at disadvantage until their next turn.


Siege Engine:

The construct deals double damage to objects and structures.

Actions

Multiattack.

AEGIS-PRIME executes suppression routines. It makes two Arcane Cleaver attacks and one Force Cannon attack.

Arcane Cleaver.  Aegis-Primes forearm unfolds into a humming force blade designed for rapid elimination.

Arcane Cleaver. Melee Attack Roll: +14, reach 10 ft. Hit: 20 (3d8 + 7) Slashing damage plus 10 (3d6) Fire damage.

Force Cannon. Aegis-Prime’s chest core opens and launches a focused beam of compressed arcane energy.

Force Cannon. Ranged Attack Roll: +12, range 120 ft. Hit: 36 (8d8) Fire damage.

Containment Pulse (Recharge 5-6). Aegis-Prime releases a suppressive wave intended to neutralize magical resistance.

Each creature of the construct’s choice within 60 feet must make a DC 19 Constitution saving throw.

Containment Pulse (Recharge 6). Constitution Saving Throw: DC 18, each creature in a 30-foot Area. Failure: 55 (10d10) Force damage. Success: Half damage.

 

Bonus Actions

Tactical Reposition:

Move up to half speed without provoking opportunity attacks.


Arcane Overclock (3/day)

Choose one:

  • Gain one additional Arcane Cleaver attack this turn
  • Recharge Containment Pulse
  • Gain +2 AC until next turn
Reactions

Defensive Projection

When hit by an attack:

Reduce damage by:

(2d10 + 6)


Spell Intercept (Recharge 6)

When a creature casts a spell within 60 feet:

Make an INT check.

DC = 10 + spell level.

Success:

The spell fizzles.

Caster loses slot.

Legendary Actions

Aegis-Prime can take up to 6 legendary actions. 

Arcane Step (Costs 1 Actions). Aegis Prime Teleports to any visible location up to 60ft.

Energy Burst (Costs 2 Actions). Aegis Prime chooses a point up to 60ft. 

Energy Burst (Recharge 6). Constitution Saving Throw: DC 18, each creature in a 30-foot Area. Failure: 38 (8d8) Force damage. Success: Half damage.

Override Protocol (Costs 3 Actions). Aegis Prime targets one creature within 60ft. 

The target must succeed on a DC 19 Dexterity Saving throw. 

Override Protocol . Melee Attack Roll: +18, reach 10 ft. Hit: 20 (3d8 + 7) Slashing damage plus 10 (3d6) Fire damage.

 

Mythic Actions

Mythic Action Name. Enter the description for how mythic actions work for your monster here.

Mythic Action Name (Costs # Actions). Enter the description for your mythic action.

Description

A pinnacle of late-stage Aeorian engineering, the Aeorian Master Construct was designed to oversee research complexes, contain catastrophic arcane breaches, and neutralize threats to Containment Protocols. Unlike standard guardians, these entities possess tactical intelligence, independent adaptation routines, and authority over lesser constructs.

Towering over most creatures at nearly 18 feet tall, the Aeorian Master Construct resembles a humanoid forged from dark metallic alloys, crystalline conduits, and floating mechanical rings. A glowing Aeorian core pulses in its chest while segmented armor plates constantly shift to optimize defense.

Its face is smooth and expressionless save for a single vertical blue eye that widens whenever combat efficiency increases.

Its movements are unnaturally smooth.

Its voice sounds like several overlapping tones speaking simultaneously.

Lair and Lair Actions

Enter a description of your monster's lair here.

Lair Actions

On initiative count # (losing initiative ties), the [monster name] takes a lair action to cause one of the following effects; the [monster name] can’t use the same effect two rounds in a row:

  • Enter a description for a lair action.
  • Enter a description for a lair action.

Regional Effects

The region containing a legendary [monster name]’s lair is [enter the effect description], which creates one or more of the following effects:

  • Enter a regional effect description.
  • Enter a regional effect description.

If the [monster name] dies, these effects fade over the course of #d# days.

Previous Versions

Name Date Modified Views Adds Version Actions
6/14/2026 7:41:41 PM
4
1
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Coming Soon

Habitat: Arctic

ErurestoboB

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