Arena of the Labors

Overview

The North gate shrieks on iron hinges and the crowd surges to its feet. The smell hits first: hot iron, dry dung, and something deeper — the musk of an apex predator that has never been afraid of anything. The Nemean Lion pads onto the sand with the unhurried confidence of a creature whose hide has turned swords for a century. The Twelve Labor murals on the far wall seem to watch from above. Then the handlers signal — two minutes reset — and the second gate drops open for the Lernaean Hydra. The braziers are already lit. The party has no short rest between waves; what they spend here is gone.

Somewhere in the stands, a drunk pilgrim shouts a demigod's name. The crowd picks it up. The Chant Clock starts.

• Lion — Drive Through North Gate: The North gate can be opened from inside by pulling the lever (Action, DC 12 Athletics or Thieves' Tools). A character at range can bait the lion toward it with a Deception or Performance DC 14 (the lion treats movement as prey-flight — one successful bait + an open gate drives it through without reducing it to 0 HP). Win condition: lion exits. Chant Clock hush attempts can overlap with this as a bonus action.
• Lion — Pin Without Kill: After the lion is bloodied, three consecutive Athletics DC 16 checks (separate characters allowed) pin it in place; handlers enter and drag it back to the East pen. Crowd reaction: muted approval — not as dramatic, but Melanthios is satisfied. Earns Thaleia's notice for Enc. 2.
• Hydra — Cauterize Track (Skill Hybrid): Severing and immediately cauterizing each head is itself a non-lethal play — the hydra can be reduced to 0 heads without reaching 0 HP if the party coordinates fire and blades. A character who uses Nature or Arcana DC 15 to read the hydra's behavior identifies the "last-head dormancy" — at 1 head, the hydra will curl defensive and stop attacking if it hasn't been struck for one full round (allows a bloodless win by outlasting it, DC 14 Persuasion to convince the crowd this counts).
• Chant Clock Hush: Any time the crowd begins chanting, an Intimidation DC 14 shout, a Performance DC 14 crowd-redirect (raise a weapon dramatically, call attention elsewhere), or a Persuasion DC 15 appeal to Melanthios in the stands can reduce the chant before it triggers the clock. Each such success also earns mild crowd favor (+1 to any future performance-based check that session).

• Lion Wave: Lion enters with Pounce already charged (first-round charge triggers immediately on initiative 20+0). Add one Stadium Gate-Hoplite who "accidentally" blocks the North gate lever for 2 rounds (DC 14 Persuasion to move him, or shove as an action). Total added XP ≈ +450.
• Hydra Wave: Hydra enters already at 6 heads (not 5) and Reactive Heads trigger on opportunity attacks only through Round 2, then activate fully. Increase HP to 190. Total adjusted XP for the wave ≈ 4,400; combined Enc 1 ≈ 6,700 × 1.5 (2-creature) = ~10,050 — firmly Hard.

Wave A — Nemean Lion

• Win: 0 HP, pin (3× Athletics DC 16 after bloodied), or drive through North gate.
• Hide ignores mundane non-bludgeoning; Olive-Resin Club ignores once/encounter.
• Chant Clock: hush demigod-name shouts (Intimidation/Persuasion DC 14).

Wave B — Lernaean Hydra

• Start 5 heads. Sever on 25+ damage hit (or called shot). Multiattack = number of heads.
• Cauterize stump with fire/acid same round (torch from brazier, spell, or club + flame) or it regrows two heads at end of hydra's turn (max 8).
• Win at 0 heads or 0 HP after final head. Handlers flood the sand if the fight exceeds ~8 rounds.

Creature Cards

Overview

Ten minutes of water and shouted praise, then the sand crews drag a second oval of packed dirt over the bloodstains. Gate II opens onto a different smell: horse sweat and iron, the metallic tang of old bits, the East chute's darkness rumbling before the Mares of Diomedes explode into the light. Thaleia is chained to the bit-rack at the West wall — she can see the mares are frightened, not hungry, and she is watching the party's hands to see if they grab weapons first.

When the mares are down or penned, the sky tears open. The Stymphalian flock drops from above — bronze feathers catching the stadium torchlight — and the bronze gongs hanging from the West scaffolding suddenly look very relevant. The crowd is screaming. Thaleia, if recruited, is already moving.

• Mares — Drive to West Pen: The West pen lever drops the gate open (Action, DC 12 Str or Athletics). Animal Handling DC 16 to herd a panicked mare toward the pen (or Lariat/shove to force it). Three mares driven through = wave ends without slaughter. Thaleia, if recruited, grants advantage on these checks and can perform one herding action independently per round.
• Mares — Free Thaleia First: The bit-rack lock is DC 12 Thieves' Tools or DC 14 Athletics to snap. Freeing Thaleia before any mare is killed is the cleanest recruitment path — she immediately joins initiative and provides Horse-Sense aura from her first action. Her recruitment also shifts Melanthios's favor: the crowd quiets and Chant Clock pressure reduces for 1 round.
• Stymphalians — Gong Skill Challenge: 4 successes before 3 failures using Performance DC 14 (dramatic gong rhythm), Athletics DC 14 (raw volume), Survival DC 15 (driving the flock toward the pen net), or Arcana DC 15 (reading the flock's panic behavior). On 4 successes, the flock collapses into the West netting — all remaining birds restrained, wave ends. On 3 failures, the flock disperses into the stands and Chant Clock +1.
• Thaleia Vow: If the party hasn't freed Thaleia but makes a public vow to pen rather than slaughter the remaining mares (Persuasion DC 14 with Melanthios in earshot, or a clear roleplay statement), she signals support from the bit-rack and Melanthios unlocks her chain at his next action (Round 2).

• Mares Wave: 4 mares instead of 3 (Hard column). Pack Hunger activates from Round 1 — mares coordinate on the squishiest-looking PC. Blood-slick terrain spreads to 30 ft. radius after the first mare drops (DC 13 Dex save on any forced movement or fall prone).
• Stymphalians Wave: 8 birds (Hard column). One elite Stymphalian — the Flock-Singer (same stats, +15 HP, can recharge Dive Bomb on 4–6) — leads the flock and must be eliminated or driven out before the skill challenge can succeed. Added pressure ≈ 700 XP per extra bird × 2 + 1,050 elite = ~2,450 extra; combined Enc 2 Hard ≈ 12,000–13,000 adjusted XP, solidly Hard.

Wave A — Mares of Diomedes

• 3 mares (Hard: 4). Free Thaleia to recruit (or vow to pen, not slaughter).
• Skill path: drive 3 through West gate (shove / lariat / Animal Handling DC 16).
• Mare reaches stands → Chant Clock +1.

Wave B — Stymphalian Flock

• As written: 6 birds (Easy 4 / Hard 8). Flyby + Dive Bomb. Thunder/gongs impose disadvantage.
• Skill path: 4 successes before 3 failures (Performance, Athletics gongs, Survival herding, Arcana weather DC 15) drives the flock into the West pen netting — ends the wave with half the remaining birds captured.
• Thaleia nets: Ready vs dive. Combat win: reduce flock to ≤2 or force a scatter (all bloodied + one gong success).

Creature Cards

Overview

Water, a cheer, and nothing else — no short rest, no healing beyond what the party has saved. The arena floor has been deliberately roughened: pillar stubs pushed to the South, a cratered center, sand-stake markers carved into the ground for the club. Gate III groans open and the Erymanthian Boar comes out sideways, tusks already sweeping. The creature doesn't charge first — it registers threats, finds the closest one, and then commits with its full body weight. The crowd is quiet in a different way now. They have been watching for two acts. They want to see if the party is still standing.

After the boar is penned or felled, there is exactly one round of heavy silence before the final gate drops. The Cretan Bull enters at a canter that becomes a charge before it clears the gate. At half HP, its Earth-Shatter Hooves begin turning the sand into difficult terrain. The murals on the far wall — the ones depicting the original labor — seem to lean inward. The absent hero's painted face watches from Gate VII. The party must plant the club or pen the bull or kill it, while the Chant Clock stands at whatever it has accumulated, one point of Hera's spite away from the finale going catastrophic.

• Boar — Capture Track: While bloodied, the boar can be captured by 3 consecutive successes (any combination of Athletics DC 16, Animal Handling DC 16 with Thaleia's aura or her Horse-Sense advantage) — each success represents a net, rope, or body-block maneuver. After 3 successes, drop the North portcullis (lever: Action, DC 12) and the boar is contained. Crowd reaction: louder than a kill. The Chant Clock drops by 1 if the capture is visually dramatic.
• Boar — Club Planting: As a bonus action, plant the Olive-Resin Club briefly to grant all allies advantage on the next shove or grapple against the boar. This telegraphs the club mechanic for the Bull wave — use it to let one player practice the timing.
• Bull — Stake the Club: Plant the club as an action (DC 14 Athletics or Strength check). Until the start of the planter's next turn, the Bull's next charge must target the stake or take 4d10 piercing and fall prone (no save). This is the designed "hero move" — signal it clearly in narration when the Bull first charges. A character who watched the boar wave may attempt this with advantage if they declared they were studying the charge pattern (DC 14 Insight).
• Bull — Pen Track: While bloodied, same portcullis mechanic as the boar (3 successes before portcullis drop). The Bull's Charge makes non-adjacent approaches dangerous — Thaleia's Lariat from range can count as one success. Club staking as an action counts as one shove-equivalent success on the first attempt.

• Boar Wave: Tusk Sweep recharges on 4–6 (not 5–6). Relentless activates at ≤40 damage instead of ≤30. If the boar fight exceeds 5 rounds, Melanthios signals and the Bull enters early — the party faces both simultaneously for at least 1 round (brutal, but the portcullis can separate them if the boar is still alive).
• Bull Wave: Bull HP 230 (up from 210). Add one extra legendary action option: Scatter Sand (1) — Wisdom save DC 15 or blinded until the start of the bull's next turn (30-ft. cone). Chant Clock at 3 adds: bull heals 40 HP once and gains an additional Pivot Charge use per round for the rest of the fight. Combined Enc. 3 adjusted XP at Deadly ≈ 3,900 (boar) + 6,000 (bull at Harder) × 1.5 multiplier ≈ 14,850 — plus Chant Clock risk pushes effective difficulty to Deadly. For the full three-encounter arc, resource attrition from no long rest makes the finale disproportionately dangerous.

Wave A — Erymanthian Boar

• Charge + Relentless. Preferred win: capture/pen while bloodied (3× Athletics/Animal Handling DC 16 + portcullis).
• Club: once, brief plant → advantage on next shove/grapple vs boar.
• If the boar fight exceeds 5 rounds, Melanthios may release the Bull early (overlap — brutal).

Wave B — Cretan Bull (Boss)

• Legendary actions. Charge / Sandstorm Bellow / Earth-Shatter Hooves.
• WIN — MAGUFFIN: Plant Olive-Resin Club (action, DC 14). Next charge hits stake or 4d10 + prone.
• Pen track while bloodied, or slay. Chant Clock 3: bull heals 40 once + extra legendary that round.
• Portcullis or 0 HP → mortal olive crown; murals of the absent hero look away.

Creature Cards