Defecto Lunia — Ch 3.7

The party won the big game — so why does the trophy taste like a trap? A victory kegger, a chugged relic, and a naked sprint across a moonlit campus were supposed to be the fun part. But the founders’ monument shows a murder that never made the history books, a locked tower hides a man rewriting the past one library page at a time, and behind a bookcase that only opens in shadow waits a plan to un-write a hero, crack open a buried gate, and blot out the moon-goddess herself. Say the password out loud and the light goes out: Defecto Lunia.

Chapter / Episode3.7 — Defecto Lunia
ArcTrinity (School of ITYS)
GMJesse
Date / Duration2025-10-09 · ~3h02m (gameplay from ~00:02:40)
PartyXeros (Dave), Nortle (Steve), TBD (Chris), Basil (Brin)
Prizethe [[aether-glass-chalice
Ends ona secret bookcase swinging open on Mutatio’s true plan — the map, the buried gate, and a room full of things they were never meant to see

Synopsis

Fresh off crushing School of Magus to claim the Aether Glass Chalice, the party wakes up heroes of the School of ITYS — and immediately squanders it. Team captain Grunsh throws a rule-shattering victory kegger, plies everyone with Purple Filth and Forbidden Fruits Orchard booze, and offers to forge TBD’s moon blade and guitar into one weapon. Xeros chugs the enhancement Chalice at exactly the wrong moment; rule-obsessed RA Morty tries to shut the party down and gets a charmed co-ed sicced on him instead. When TBD decides finals be damned, let’s go look at that statue, the whole crew strips down and goes streaking — which turns the trip to the Ringer Monument into a moonlit stealth run past campus guards, since Selûne’s light itself sees all wrongdoers.

At the monument, TBD touches the statue of the two founders and drops into a vision. Two revelations land at once: only one body lies in the Terry Ringer catacomb though both brothers should be buried there — and a second glimpse shows Mutatio, head of the School of Alchemy, turning to a man he names Thalen (“I know who you are, Thalen”) and casting a spell of consuming shadow: defectio luniae. Thalen is one of the two agents Lashara sent them to find. The vision blows Xeros’s cover; a chase erupts, and to spring the shrunk-down bard from the guards, TBD Shatters a corner off a School of Artifice building. In the chaos they find a torn page — Jenkins’ captured runes — slip inside, and rocket up a five-story tower on ground veil powder (the “Rockacopter”) to a mechanical door marked Master Mutatio.

The office cracks open on blood and worship, and inside they corner a shadow that resolves into the halfling prefect Brendel — caught mid-heist, “correcting” history for Mutatio. Boxed in Basil’s Wall of Force, he confesses: he and Mutatio are scrubbing every page where Old Man Jenkins accused the brother of Terry of being a wendigo — the accusation itself, extracted from the record. Speaking “lunar eclipse” in Oldish (Defectio Luniae) swings a hidden bookcase aside, unveiling a map of Kouréas titled with that same password: three cities circled — Pearl (“Sa-Muhell”), Oovuãn (Damanos, scrawled “Dominos”), and Trinity (“the changing one… must access Stargate”) — the twin of the old Imp Ending Doom map. A scripture called The Doom of the Arcanists tells of the Arcanist Conclave of Alerian, who built a gate to storm heaven and sacrificed Kairith the Shard of Mercy — until Selûne reversed it and buried it beneath the Temple. And Thalen’s letters to Nereza confirm the nightmare: the brother of Terry is a living shapeshifter who slipped past the shield, all of Trinity is in peril, and three crossed-out Owling names on the missing-persons list spell out Foulclaw. They box Brendel behind the eclipse-sealed wall and slip out into the night, sitting on the biggest secret in the campaign.

Player Characters

CharacterPlayerRaceClassNote
XerosDaveTieflingBardWastes the Chalice, streaks the campus as a “solid snake,” disguises as [[morty
NortleSteveTortleMonkMoonwalks past guards, opens the blood-door by leaning on it, and offers his belly as a “Nortal Eclipse”
TBDChrisGoliathWizardTakes his first [[purple-filth
BasilBrinHarengonFighterBlack-furred bunny-ninja; masters her heal by accident; cages [[brendel

NPCs

NPCRoleNote
[[grunshGrunsh]]Orc [[sky-rush-showdown
[[mortyMorty]]Rule-obsessed tiefling RA
[[mutatioMutatio]]Head of the [[school-of-alchemy
[[brendelBrendel]]Halfling prefect
[[thalenThalen]]The Lashïngs agent (missing)
[[nerezaNereza]]The Lashïngs agent (missing)
[[the-brother-of-terrythe brother of Terry]]Founder, secret shapeshifter
[[kairithKairith]]Shard of Mercy
LasharaGnome patron, The Lashïngs leaderNot present — but [[thalen

Factions

FactionNote
[[the-church-of-itysThe Church of ITYS]]
[[the-seven-shardsThe Seven Shards]]
[[arcanist-conclaveArcanist Conclave]]
[[school-of-alchemySchool of Alchemy]]
[[school-of-artificeSchool of Artifice]]
[[school-of-sorcerySchool of Sorcery]]
[[school-of-magusSchool of Magus]]
The LashïngsLashara’s spy network; [[thalen

👹 Monsters

CreatureEncounterNote
Campus guardsChase / evadedA stealth-and-chase episode, not a bloodletting — the moonlit “mall cops” and Selûne’s spotlights are dodged, deceived, and Shattered away, never truly fought
[[the-brother-of-terrythe brother of Terry]]Unfought (revealed)

🎙️ Notable Moments

00:20:44 — The morning after the win, TBD jumps on a bunk bed to play his oldest songs — and learns exactly which fans still know them.

TBD: I know, but it’s more fun to play — I mean, we never get to play those songs. GM: They’re trying to get through the crowd to see you— TBD (as a fan): Oh my gosh, I know this song! Once in a lifetime! Dad! Dad! You’ll never get to see it! GM (Grunsh): (sympathetic grunt) Yeah, brother, nice job.

00:24:54 — Rule-obsessed RA Morty won't break curfew, so Xeros charms a co-ed to make sure he "studies all night and gets to bed on time."

Xeros: I really just want to help out the religion. I want everyone to be converted. GM: He sees this beautiful tiefling girl approach him, because she’s willing to do anything— Xeros: I need you to go get him, tackle him, and make sure he gets everything done. GM: He’s screaming bloody murder — they fade into the crowd, and you just hear his screams out into the night. Xeros: He’s gonna have the best night ever.

00:44:34 — Xeros chugs the enhancement Chalice right before eating fish for stealth, throws both back up, and decides the universe has a message.

GM: Do you lose a conversion point? Are you learning a lesson right now about diligence and faithfulness? Xeros: I start to think I’ve actually been cursed. I fell into my old ways… Selûne is now punishing me. Xeros: It’s kind of like — you know — it’s how God really is. GM: We’re not going to promote that. That’s not our ad placement or anything.

00:48:33 — Xeros peeks into Morty's dorm window and tries to cast Persuasion through the glass. The DM has a wall ready.

Xeros: Now that I’m looking in the window, I’m going to cast Persuasion again. GM: Right, you can’t speak to him. It’s soundproof, bulletproof glass — it’s Chastity Glass. He can’t hear you. Xeros: …That was the best DM shutdown I have ever heard. Thank you for that.

01:22:30 — TBD keeps triggering monument visions by touching the founders' statue — in a spot Nortle would rather he didn't.

Nortle: I bet this statue would prefer that you not touch them there again. TBD: I guess I didn’t pay attention to where I touched. Xeros: Welcome back to Touched by an Angel. Where did the angel touch you? TBD: Show me on the doll.

01:29:15 — To free the shrunk-down Xeros from the guards, TBD casts Shatter — and the shockwave sets off his newly forged guitar clear across the water.

Nortle: At the same time, I can imagine that back in the dorms you hear this killer riffGM (Grunsh): Grunsh goes, “check this out, man — he left it here.” Nortle (Grunsh): It starts playing… I am so high right now. GM: The corner of the building just explodes. It’s the School of Artifice — common occurrence. Just not after hours.

01:52:23 — Facing a five-story spiral staircase, the rock stars pack veil powder under a shield and spin like a concert pyro move.

GM: You do one of your concert dance moves where you spin, it grinds the powder underneath and ignites, and you spiral up the staircase together. GM: I feel like you went from rocket to helicopter — so it could be like a rocket-copter— Xeros: The Rockacopter! Nortle: Rockacopter!

02:03:28 — The office door needs blood and worship; Xeros mutilates himself while Nortle just… leans on it.

GM: When both of you touch the door and your blood is offered, all the latches and gears start twisting — and the door opens. Xeros: Nortle, how did you do that? Nortle: Well… when a man loves a woman a lot— …What? Basil: Why do we ever ask him to explain anything?

02:18:36 — Trapped in a shrinking Wall of Force, Brendel scoffs that the Church would never understand Mutatio — and takes a shot at Xeros's brand-new faith.

Nortle: I think he just insulted your religion now. GM (Brendel): His religion? His two-day religion? …Forty-eight-hour deep. TBD: Finding my religion. Xeros: As a man of deep faith, I have a moral duty to turn you in to the proper authorities.

02:32:10 — The secret bookcase only opens under a lunar eclipse; with real moonlight pouring in, Nortle volunteers his midsection.

Nortle: I jump up on the windowsill and use my tummy — now you’re a circle, more or less, right? Basil: A Nortal Eclipse! Xeros: A nortal eclipse of my heart — right there. GM: Nortoclipse of my heart.

02:57:20 — At the bottom of Mutatio's missing-persons list are three crossed-out Owling names — and Xeros does the math out loud.

Basil (reading): Willowwatch Foulwing… Echo Frostclaw. Nortle: Wait — if you take their last names and put them together, you get Frostwing. Xeros: You get Foulclaw. You moron. Nortle: With our powers combined, we figured this out.

🗺️ Locations

LocationMentioned / TraveledNote
[[itys-the-cityITYS]]Traveled
[[ringer-monumentRinger Monument]]Traveled
[[school-of-artificeSchool of Artifice]]Traveled
[[the-trinity-citiesThe Trinity Cities]]Mentioned
[[koureasKouréas]]Mentioned
[[pearlPearl]]Mentioned
[[oovuanOovuãn]]Mentioned
[[alerianAlerian]]Lore
El CinedeMentionedWhere the party first met [[damanos
[[new-old-trinity-cityNew Old]]Mentioned

🎒 Items

ItemUsed / IntroducedNote
[[aether-glass-chaliceAether Glass Chalice]]Used
[[purple-filthPurple Filth]]Used
[[the-forbidden-fruits-orchardForbidden Fruits Orchard]]Used
[[dark-mantle-dishDark mantle dish]]Used
Veil powderUsedFlammable ground [[veil-stone
[[the-doom-of-the-arcanistsThe Doom of the Arcanists]]Introduced
[[the-book-of-jenkinsThe Book of Jenkins]]Introduced
[[special-edition-tortle-tarot-cardTortle Tarot Card]]Recovered
[[span-quillsSpan Quills]]Recovered
Silver sashIntroducedSoul-magic church robes ([[thalen

⛩️ Pantheon & Religion

PowerMentioned / SeenNote
SelûneSeenMoon-maiden the Church truly venerates; her light polices the campus, reverses the [[the-stargate
Father ITYSMentionedNamesake of the church, school, and city; “praise ITYS” is the party’s constant refrain
[[kairithKairith]]Lore

Cliffhanger

The bookcase seals shut with Brendel boxed inside — and the party is now the only ones who know the whole shape of it: Mutatio is scrubbing history to un-write Jenkins’ warning that the brother of Terry is a living wendigo, loose past the shield, chasing a buried Stargate beneath the Temple. Thalen’s last letter is a plea — warn Lashara, all of Trinity is in peril — and among the crossed-out names on the killer’s list are the parents of their own missing friend, Foulclaw. Finals are tomorrow. Nobody’s studied.

Echoes of ITYS · 250911-ch3.6-meganacle-pride · 251023-ch3.8-the-final-final · Mutatio · the brother of Terry · Ringer Monument · Defectio Luniae · The Stargate · The Doom of the Arcanists · Foulclaw · Lashara · The Forgotten Hour