The Labyrinth of the Unshapen

One-Shot · 6 Players · Average Level 8 · ~3.5 Hours · Greek Mythology Themed

SESSION SUMMARY

Style: Infiltration / Rescue / Boss Fight
Setting: Clifftop stables → ruined stone garden → underground alchemical sanctum
Win Condition: Stop Theron. Destroy the Chrysalid Crucible.
Players: 6 × Level 8 · ~3.5 Hours · Atmosphere: Greek antiquity · Alchemy · Body Horror

Huntress-priestess Phaedra finds the party and presses a scroll fragment into a player's hand. Theron Amorphos, a disgraced alchemist, is two days from firing his Chrysalid Crucible — pulling the essences of all magical beasts within 100 miles into forced convergence. Cross his stables, thread the ruined garden, destroy the Crucible, and end his work.

"From one of his early papers. He published it himself. He thought it was about the animals." She presses torn papyrus into a player's hand — bronze ink, cut at both ends. The fragment reads only: Break the sigil, break its loyalty. — Phaedra

Major Beats

Tavern Meeting. Phaedra delivers scroll, contract, sketch-map. Investigation DC 13: Theron published taxonomy papers; DC 17: expelled for experimenting on sentient subjects; DC 20: declared dead 12 years ago.
Celestial Stables. Kreon manages 3 Griffins + 2 Pegasi in iron sigil collars. Combat avoidable — charm, deceive, or stealth to free aerial allies for Act 3.
Broken Garden. Skill challenge vs. Manticore / Hippogriff / Chimera patrols — or combat on failure. Cache holds Research Codex. Optional: rescue Thessaly.
Chrysalid Sanctum. Boss fight. Phase 1: squishy summoner on dais. Phase 2: Minotaur transformation (recommended: Contingency Draught).
Resolution. Crucible destroyed; Theron dead, subdued, or escaped. Phaedra arrives within hours.

Creature / Enemy List

Creature	Easy	Medium	Hard	Notes
Chimera	1	1	1	Enc 2 (garden) / Enc 3 (vat summon)
Composite Hippogriff	1	1	1	Enc 2 / Enc 3; Vat A pre-open on full alert
Harpy	1	2	2	Enc 1 & Enc 3; Luring Song Rd 2
Kreon the Yoke-Bearer	1	1	1	Enc 1; avoidable; reduced HP on Easy
Manticore	1	1	1	Enc 2; +1 on APL 10
Minotaur Guard	2	1	2	Enc 1 (2) / Enc 3 (1); Deadly Enc 3: 2
Theron P1 / P2	—	1	1	Boss Enc 3; CR 8 → CR 11
Griffin / Pegasus	3 / 2 stabled			Recruitable Aerial Allies → Act 3

Difficulty Scaling (baseline APL 8 ★)

APL	Enc 1 — Stables	Enc 2 — Garden	Enc 3 — Sanctum
4	2× Hobgoblin (no Minotaurs); −1 Harpy; Kreon 55 HP; DCs −3; song Rd 3	1 patrol at a time; 2 succ / 3 fail; DCs −3; Chimera 75% HP	Theron 55 HP, 2 LA; Vats A–B; P2 → 90 HP; Crucible 50 HP
6	1 Minotaur + 1 Hobgoblin; 1 Harpy; Kreon 70 HP; DCs −1	2 patrols; DCs −1; Chimera 90% HP	Theron 70 HP, 2 LA; Vats A–C; P2 → 120 HP; Crucible 65 HP
8 ★	As written (baseline).
10	+1 Minotaur; Harpy DC 14; Kreon 110 HP + partial-Minotaur contingency; DCs +2	+2nd Manticore; DCs +2; all 4 engage; Fire Breath recharges 4–6	Theron 110 HP, 4 LA; 2 Minotaurs + 2 Harpies; P2 → 200 HP; save DC 18

Scroll payoffs (all acts): Act 1 collar DCs drop (remove DC 12 / calm DC 10). Act 2 sigil break DC 9 (vs 13). Act 3: recognize summon/Phase-2 chest sigils immediately (no Arcana). Without scroll: Act 3 Phase-2 sigil needs DC 15 Arcana to identify.

ENCOUNTER 1 — The Celestial Stables

Hard (if combat) / Avoidable · ~40 min · 4–6 turns | Terrain: Clifftop limestone stables 90×60 ft (cliff N, 40 ft drop S). Pens = half cover; bronze lamps (bright 10 ft).

Creatures: 1× Kreon · 2× Harpy (cliff, +20 ft) · 2× Minotaur Guard. Stabled (not hostile): 3× Griffin · 2× Pegasus — iron sigil collars. Win: pass / free allies; combat optional.

Path A Social: DC 14 Deception/Persuasion (inspectors/traders) — Minotaurs leave; Harpies need separate DC 17. Kreon talk DC 16 Persuasion (DC 13 if party shows care for animals) → 10 min delay; charmed Kreon releases creatures. Non-combat Kreon foreshadows contingency vial.
Path B Stealth: DC 12 Perception (patrol gap) → DC 13 Group Stealth. Silent collars: DC 12 SoH w/ scroll / DC 16 without. Full silent release of 5: 3 successes before 2 failures.
Path C Distraction: Cut feed rope (DC 10 Athletics / slash) occupies Kreon + Minotaurs 1d4+1 rds (−4 collar DCs). Illusion/throw: DC 12 Deception (Kreon DC 17). Pen squabble DC 14 AH — 1-in-6 aggro risk.
Combat: Harpy Luring Song starts Rd 2 — humanoids 300 ft DC 11 WIS or Charmed (must approach; cliff edge DC 12 WIS or step off = 4d6 fall). Kreon Collar Command (BA): collared creature 60 ft DC 13 WIS or attacks chosen target. Aggro d6 if stabled creature damaged / thunder near pens: 1–2 breaks free (then 1–3 party / 4–6 guard); 3–6 holds.
Sigil collars: Remove SoH DC 16/DC 12 · Smash AC 11 / 5 HP / DC 13 STR · Calm AH DC 14/DC 10 · Recruit DC 16/DC 12 · Pegasi calm/recruit DC 14/DC 16 → DC 8/DC 10 w/ scroll. Kreon 0 HP: all collars slack — remove Free Action; calm/recruit DC 10.

Aerial Allies tracker: 0 = none · 1–2 arrive Rd 2 independent · 3–4 Rd 2 directable (DC 12 AH Free Action) · 5 arrive Rd 1, +4 atk vs Theron/summons; Pegasi Inspire without direction check.

ENCOUNTER 2 — The Broken Garden (Skill Challenge / Optional Combat)

Hard / Avoidable · ~30 min · 4–5 turns if combat | Terrain: Ruined courtyard 150×100 ft. Fallen columns (difficult / ¾ cover); tangled copper pipe; open sky.

Goal: 3 successes before 3 failures (one zone each). Patrol: 1× Manticore · 1× Composite Hippogriff · 1× Chimera. Sigil-broken creatures skip combat. Win: reach lab stairs without full alert.

Zone 1 Fallen Columns (Manticore): Group Stealth DC 13 (adv if DC 11 Perception finds gap) · Nature DC 12 scent decoy = auto · AH DC 14 · Sigil Break DC 13 Ath/Arc (DC 9 scroll) = auto-success + remove from further encounters.
Zone 2 Observatory (Hippogriff): Individual Stealth DC 14 (worst applies) · Arcana DC 13 counter-hum = auto · Performance/Deception DC 14 · Sigil Break needs climb DC 14 Stealth or DC 13 Athletics first.
Zone 3 Gate of Stone (Chimera): Group Stealth DC 15 (disadv if >3 move) · Perception DC 12 + Athletics DC 13 east-wall bypass · Deception DC 15 (DC 12 vs goat head) · Sigil Break DC 14/DC 10 scroll = heads argue, auto-success.
Combat tactics: Chimera Fire Breath first · Hippogriff stays ≥15–30 ft altitude, dive Prone · Manticore retreats to 100 ft, tail spikes; won't close <40 ft unless <30% HP. Combat sigil break: DC 13; freed rolls 1d6/rd (1–3 party / 4–6 enemy).
0 failures: cache +1 item; wild collar-free griffin recruitable DC 11 AH (free ally pip).

Failure: 1 = one alert, next zone Disadv · 2 = combat starts with alerted creature; other two arrive Rd 2 · 3 = full alert, all three engage; Theron starts Enc 3 with Vat A already open.

Cache (DC 12 Perception / DC 10 Athletics open): Research Codex always (1 min read → Adv on Enc 3 initiative; reveals Draught, Crucible priority, Phase-2 chest sigil). DM picks 1–2: Essence Dispersal Vial×3 · Sigil Chisel×1–2 · Antidote×3 · Smoke Pot×2 · Healing Potion×2. Thessaly: DC 15 Perception; gate AC 10 / 5 HP / DC 10.

ENCOUNTER 3 — Theron, the Unshapen (Boss)

Hard · Phase 1 ~4–6 turns · Phase 2 ~4–6 turns | Terrain: Sanctum 100×80 ft, vaulted 25 ft. Dais +20 ft N · Crucible center (AC 14 / 80 HP) · 4 Vats A–D (AC 13 / 30) · Skylight 15×15 (ally entry) · Slabs DC 14 DEX / 4d10 + Restrained · Channels DC 11 DEX / 1d4 acid · 6 mirrors (destroy 3+ halves Absorb Essence) · Oil lamps (1d6 fire ongoing).

Start: Theron P1 on dais · 2× Harpy (columns +10 ft) · 1× Minotaur (stairs). Full alert → Hippogriff already out. Win: destroy Crucible + defeat/subdue/prevent Theron.

Phase 1: Stays on dais (force down: Thunderwave/Telekinesis/Dissonant Whispers or destroy stairs AC 12 / 40 HP). Absorb Essence (R): summon 0 HP within 30 ft → 2d6+3 HP (1/rd). Destroy Crucible → drops summons, blocks activation, weakens P2. Activate Vat (BA, recharge 5–6). Harpy song Rd 2 — charmed toward Harpy; reaching Crucible DC 13 WIS or step in (3d8 acid, ends charm). Summon sigil break DC 13/DC 9; Theron may Seal the Sigil (LA cost 2).
P2 trigger (pick 1): ★ Contingency Draught at 0 HP (Reaction drink → init 20, 160 HP); prevent: vial AC 10 / 10 HP (−2 atk) or steal DC 17 SoH. Alt: all summons die same rd → 15 force + transform; Crucible immersion ≤40 HP; or Ritual Timer after 8 rds.
Phase 2 (AC 16 / 160 HP / Speed 40 / 3 LA): Reckless always · Charge +3d8 + DC 17 STR · Chest sigil AC 13/10 HP or DC 15 Arcana → Theron DC 16 WIS or lose concentration + all LA until next turn · Absorb Essence any 0 HP 30 ft → 2d8+5 (½ if Crucible gone; ¼ if 3+ mirrors) · BA retained spells: Hold Person / Slow / Misty Step · Slab Drop LA cost 2 · Below 30 HP: final statement then charge or Misty Step escape.
Allies: Arrive Rd 2 (Rd 1 if 5 freed) via skylight; init 15; DC 12 AH Free Action to direct. Griffins: fly-by; hit → DC 13 STR or Prone (1/Griffin/enc). Pegasi: Inspire ally 30 ft Adv next attack.

Resolution: Crucible destroyed + Theron down → creatures settle; Phaedra arrives. Nonlethal → he names ≥2 parallel researchers. Escape → Minotaur form, formula memorized (sequel hook). Insight DC 14: Phaedra commissioned the survey Theron used.

CREATURE STAT BLOCKS

Kreon the Yoke-Bearer

Medium Humanoid (Partial Transform) · LN · CR 4 (1,100 XP)

AC 15 · HP 80 (10d8+40) · Speed 30 ft · PP 13

STR 18(+4) DEX 12(+1) CON 18(+4) INT 10 WIS 12(+1) CHA 9(−1) · Saves STR+6 CON+6 · AH+5 Ath+6 Perc+3

Collar Command. Collared creatures 60 ft can't willingly attack him; at 0 HP / Incapacitated all collars slack (remove Free Action; calm/recruit DC 10). Bull's Grit. On damage, DC 12 CON → reduce 5 (2/rd).

Multiattack. 2× Barbed Whip +6 (9 slash + 3 pierce, reach 10) or Whip + Chain Snare +6 (8 bludge; DC 15 STR or Restrained). BA: Collar Command (DC 13 WIS) · Drag Restrained 15 ft. R: Intercept (redirect atk within 5 ft to self).

Harpy

Medium Monstrosity · CE · CR 3 (700 XP)

AC 11 · HP 58 (13d8) · Speed 20 ft, Fly 40 ft · PP 10

STR 12(+1) DEX 13(+1) CON 10 INT 7(−2) WIS 10 CHA 13(+1)

Multiattack. 2× Claws +3 (6, 2d4+1 slash). BA: Luring Song — humanoids 300 ft DC 11 WIS or Charmed (must approach; no Dash; ends on dmg / stop singing / Incapacitated; success = 24h immune; max 3 targets).

Minotaur Guard

Large Monstrosity · CE · CR 3 (700 XP)

AC 14 · HP 76 (9d10+27) · Speed 40 ft · DV 60 · PP 15

STR 18(+4) DEX 11 CON 16(+3) INT 6(−2) WIS 16(+3) CHA 9(−1) · Perc+5

Charge. 10+ ft + Gore → +9 (2d8) pierce; DC 14 STR or push 10 ft Prone. Labyrinthine Recall.

Multiattack. Greataxe +6 (17, 2d12+4) + Gore +6 (13, 2d8+4). BA: Reckless (Adv atk / Adv vs self).

Chimera

Large Monstrosity (Amalgam) · CE [Sigil-Bound] · CR 6 (2,300 XP)

AC 14 · HP 114 (12d10+48) · Speed 30 ft, Fly 60 ft · DV 60 · PP 12

STR 19(+4) DEX 11 CON 19(+4) INT 3(−4) WIS 14(+2) CHA 10

Sigil Bound (goat horn): break adj Action DC 14 Ath/Arc (DC 10 scroll) → loses Multiattack 1 turn, then 1d6/rd targeting.

Multiattack. Bite +7 (11) + Horns +7 (15) + Claws +7 (11). Fire Breath (5–6): 60-ft cone DC 15 DEX, 35 (10d6) fire / half.

Composite Hippogriff

Large Monstrosity (Amalgam) · Unaligned [Sigil-Bound] · CR 4 (1,100 XP)

AC 13 · HP 85 (10d10+30) · Speed 40 ft, Fly 60 ft · DV 60 · PP 13

STR 18(+4) DEX 13(+1) CON 16(+3) INT 3(−4) WIS 12(+1) CHA 7(−2) · Perc+3 · Keen Sight

Sigil Bound (neck-ridge): DC 13/DC 9 or AC 13/10 HP. Pounce. 20+ ft + Claw → DC 14 STR or Prone; BA Beak if Prone.

Multiattack. Beak +6 (9) + 2× Claws +6 (11).

Manticore

Large Monstrosity · LE [Sigil-Bound] · CR 3 (700 XP)

AC 14 · HP 68 (8d10+24) · Speed 30 ft, Fly 50 ft · DV 60 · PP 11

STR 17(+3) DEX 16(+3) CON 17(+3) INT 7(−2) WIS 12(+1) CHA 8(−1)

Sigil Bound (tail spine): DC 13/DC 9; freed 1d6/rd target.

Multiattack. Bite +5 (7) + 2× Claws +5 (8), OR 3× Tail Spike +5 (7, 100/200 ft). Prefers max range.

Griffin (Aerial Ally)

Large Monstrosity · Unaligned · CR 2 (450 XP)

AC 12 · HP 59 (7d10+21) · Speed 30 ft, Fly 80 ft · DV 60 · PP 15

STR 18(+4) DEX 15(+2) CON 16(+3) · Perc+5 · Keen Sight

Multiattack. Beak +6 (8) + Talons +6 (11). Ally: init 15; fly-by only; hit → DC 13 STR or Prone (1/Griffin/enc). 5 allies: +4 atk vs Theron/creatures.

Pegasus (Aerial Ally)

Large Celestial · CG · CR 2 (450 XP)

AC 12 · HP 59 (7d10+21) · Speed 60 ft, Fly 90 ft · PP 16

STR 18(+4) DEX 15(+2) CON 16(+3) INT 10 WIS 15(+2) CHA 13(+1) · Saves DEX+4 WIS+4 CHA+3 · Perc+6

Hooves. +6 (11, 2d6+4). Ally: Inspire — ally 30 ft Adv next attack this rd. No direction check if freer visible; 5 allies: Inspire Free Action + also attacks.

Theron Amorphos — Phase 1: The Summoner

Medium Humanoid · LE · CR 8 (3,900 XP)

AC 13 (Mage Armor) · HP 85 (13d8+26) · Speed 30 ft · PP 17

STR 8(−1) DEX 14(+2) CON 14(+2) INT 20(+5) WIS 16(+3) CHA 12(+1) · Saves INT+9 WIS+7 CON+6 · Arcana+13 · Spell DC 17 / +9

Slots: Cantrips Acid Splash/Mage Hand/Minor Illusion/Poison Spray · 1st×4 Fog/Grease/Mage Armor/Identify · 2nd×3 Hold Person/Misty Step/Suggestion/Enhance Ability · 3rd×3 Stinking Cloud/Slow/Haste/Conjure Animals* · 4th×2 Vitriolic Sphere/Polymorph/Blight · 5th×1 Hold Monster/Contagion

Contingency Draught left belt (AC 10 / 10 HP; steal DC 17 SoH). At 0 HP drinks → rises init 20 full P2; destroy vial first = no P2.

Multiattack. 1 spell + Alchemical Strike +9 (14 acid) OR 2 spells ≤2nd. BA: Activate Vat (5–6) · Alchemical Vial 30 ft (DC 15 DEX, 2d6 acid + Poisoned). R: Counterspell · Absorb Essence 2d6+3. LA×3: Vial (1) · Redirect Beast (1) · Seal Sigil (2) · Essence Drain (3) DC 15 CON 4d8 necro, heal half.

Theron Amorphos — Phase 2: The Unshapen

Large Monstrosity (Transformed) · LE · CR 11

AC 16 · HP 160 (15d10+75) · Speed 40 ft · DV 60 · PP 16

STR 22(+6) DEX 10 CON 20(+5) INT 18(+4) WIS 14(+2) CHA 8(−1) · Saves STR+10 CON+9 INT+8 · Resist nonmag BPS

Charge +3d8 + DC 17 STR push 15 Prone · Reckless always · Arcane Horns Gore hit → DC 16 INT or lose concentration · Chest Sigil AC 13/10 HP or DC 15 Arcana → Theron DC 16 WIS or lose conc + all LA · Absorb Essence any 0 HP → 2d8+5 (½/¼ w/ Crucible/mirrors) · BA spells ≤3rd: Hold Person/Slow/Misty Step

Multiattack. Greataxe +10 (18) + Gore +10 (15), or 2× Greataxe. Alchemical Hurl replaces 1 atk (40 ft, DC 15 DEX, 3d6 acid). R: Absorb · Brace (halve melee, 1/rd). LA×3: Gore (1) · Hurl (1) · Arcane Roar (2) 30 ft DC 15 WIS Frightened · Sprint (3) full move no OA + Greataxe · Slab Drop (2) 10×10 DC 14 DEX 4d10 + Restrained (DC 16 STR); 4 slabs.

KEY ITEMS & McGUFFINS

Scroll Fragment — Phaedra's Handout

Physical Prop · Session Thread

Torn papyrus, bronze ink: "Break the sigil, break its loyalty." From Theron's early paper — he meant a warning; she weaponized it.

Act 1: recognize collar discs → lower remove/calm DCs. Act 2: sigil break DC 9 (vs 13). Act 3: auto-ID summon & Phase-2 chest sigils (else DC 15 Arcana).

Chrysalid Crucible

Session McGuffin · Central Basin

Destroy: AC 14 · HP 80. Immediately drops all active summons, prevents further vat activation, weakens Phase 2 Absorb Essence (halve). Priority target — Theron uses Redirect Beast to interpose.

If Theron immerses at ≤40 HP and Crucible is destroyed while he's inside: Phase 2 starts at 80 HP + Disadv on attacks 3 rounds.

Theron's Research Codex

Clay Tablets · Always in Act 2 Cache

1 minute to read. Reveals: (1) Draught of the Labyrinth on left belt; (2) Crucible powers summoning — destroy it; (3) Phase 2 chest sigil disrupts magic. Grants Advantage on first initiative roll of Encounter 3.

Draught of the Labyrinth

Contingency Vial · Left Belt

Recommended Phase-2 trigger. AC 10 · 10 HP (attacks at −2) · steal adjacent DC 17 Sleight of Hand. Drinking at 0 HP → full 160 HP Unshapen form at Initiative 20. Destroyed first = Theron dies at 0 HP, no Phase 2.

Cache Options (DM picks 1–2)

Essence Dispersal Vial×3: 10 ft, DC 14 WIS or lose sigil control 1 rd. Sigil-Breaking Chisel×1–2: auto-break one sigil, single use. Antidote×3: cure Poisoned + Adv next CON. Smoke Pot×2: heavy obscure 20 ft, 3 rds, Disadv attacks inside. Healing Potion×2: 2d4+2.

Sigil Quick Reference

Collars Enc 1: SoH DC 12/DC 16 or smash AC 11/5 HP/DC 13 STR. Patrol Enc 2: DC 13/DC 9 (Chimera DC 14/DC 10). Summons Enc 3: DC 13 or AC 13/10 HP; Seal Sigil may rebind. Phase-2 chest: DC 15 Arcana or AC 13/10 HP → Theron DC 16 WIS. Gate/Vat D: AC 10 / 5 HP / DC 10.

NPC QUICK REFERENCE

Phaedra — Quest Giver

Role: Elder huntress-priestess of Artemis · NG · sun-dark, grey-haired, economical speech.
Motivation: Two seasons tracking creature wrongness (migration, pairing, gathering near ruins). Won't go herself — bad knees; pays well.
Knows: Crucible fires in ≤2 days; 100-mile magical-beast radius; scroll is from Theron's early paper.
Secret: She commissioned the field survey Theron used as baseline. Insight DC 14 she's withholding. Quote: "He was brilliant. He probably still is. That is the problem."

Theron Amorphos — Antagonist

Role: Disgraced alchemist-scholar · LE · gaunt, white-edged hair, stained robes; precise, never raises voice; 3 weeks underground.
Motivation: Species separation is a flaw; Crucible is surgery, not cruelty. Correct that something is unraveling — catastrophically wrong about the remedy.
If confronted: "You came to stop it. I understand that. But I suspect she didn't tell you what the alternative looks like in another hundred years."
Stats: See Phase 1 / Phase 2 cards (p.3). Nonlethal → names ≥2 parallel researchers. Escape → sequel hook.

Kreon the Yoke-Bearer — Henchman

Role: Stablemaster · LN · bull horns at temples, oversized hands; volunteered partial transform 11 yrs ago (ex horse-breaker).
Motivation: Loyal, methodical, not cruel. Will not surrender — but can be spoken to. If party treats animals with obvious respect, he hesitates before fighting.
Roleplay: Non-combat path foreshadows Theron's contingency vial. Stats on p.3.

Thessaly — Optional Rescue

Role: Young naturalist · NG · ink-stained fingers, battered notebook; captured investigating creature strangeness.
Free: East-wall pen Act 2 — DC 15 Perception; gate sigil AC 10 / 5 HP / DC 10 Athletics or Thieves' Tools.
Knows: Overheard Draught location ("left belt, bronze clasp"); counted 4 vats (D forbidden); skylight is natural collapse.
Combat (Act 3): AC 11 · HP 14 · Action each round: Help one PC (Adv next attack or skill check).

Resolution & Aftermath

Crucible drained; controlled creatures slump/flee; ceiling trembles; Phaedra arrives within hours; beasts return to natural ranges over weeks.
If pressed, Phaedra admits commissioning the survey. Theron subdued or escaped seeds a sequel.