Morimens Posse Unlock Guide – Arc 2 Story Posse Unlocks

In Morimens, Posses are one of the most important progression systems in the entire game. They function almost like powerful support abilities that can completely change how a run plays out depending on your team setup, realm synergy, and overall strategy.

Some Posses focus on raw damage and strength scaling, while others specialize in poison setups, Arithmetica recovery, crit stacking, shielding, card generation, or special team interactions tied to specific Awakeners.

The biggest issue for many players is that the game never clearly explains where every Posse comes from. Some are unlocked through the main story, others come from Dreamscape, Psyche Deepdive, Special Ops, Multiverse Link, or even the Mythag Shop. Because of that, a lot of players end up missing strong Posses simply because they never realized certain side content rewards them.

This guide covers every currently available Posse and exactly how to unlock them.

Main Story Posse Unlocks

These Posses are unlocked through the main Operations storyline on Normal difficulty.

Voices in Your Head

• Effect: Inflicts Weakness and Vulnerable on all enemies while stealing STR from them.
• Unlock: Automatically obtained during the tutorial.

Tiny Wish

• Effect: Increases a chosen Awakener’s Aliemus by 35.
• Unlock: Complete 1-13 “Birdless Night”.

A Mouse’s Wisdom

• Effect: Recover 3 Arithmetica.
• Unlock: Complete 2-15 “Silent Collapse”.

Encounter in Pure White

• Effect: Discard your hand, then redraw that many cards plus 2 more.
• Unlock: Complete 3-13 “The Current Will Guide You”.

Warded Injection

• Effect: Gain Shield and recover HP if below 25% health.
• Unlock: Complete 4-15 “Sunset”.

Obsession Eternal

• Effect: Gain permanent Strength and Temporary Strength scaling from permanent STR.
• Unlock: Complete 5-14 “Lost Light”.

Funus Aeternum

• Effect: Increases all Awakeners’ Aliemus by 15 while applying delayed Sacrifice damage.
• Unlock: Complete 6-15 “Unknown Astral Path”.

The Lone Seed

• Effect: Creates a duplicate of a Non-Derived Command card with Exhaust while increasing Aliemus.
• Unlock: Complete 7-19 “Epilogue”.

Symphony Fourth

• Effect: Recovers Arithmetica or draws cards depending on card cost. Eventually creates Insight after repeated use.
• Unlock: Complete 8-14 “Finale”.

Answer of the Gate / The Gated Answer

• Effect: Discover 3 random Posses and unleash one while gaining Keyflare.
• Unlock: Complete 9-3 “Dream Fracture”.

Arc 2 Story Posse Unlocks

Plague of Illusions

• Effect: Increases Aliemus and inflicts massive Poison on all enemies.
• Unlock: Complete Arc 2 Chapter 1-14 “Within the Rain”.

Sacred Mending

• Effect: Restores HP and STR while heavily buffing Clementine interactions.
• Unlock: Complete Arc 2 Chapter 2-18 “Farewell, Burning World”.

Cruel Homage

• Effect: Steals STR from enemies and grants Doresain a Corpse stack.
• Unlock: Complete Arc 2 Chapter 3-11 “Beyond the Tides”.

Wayward Ship

• Effect: Grants Arithmetica and applies Birth Ritual stacks to enemies.
• Unlock: Complete Arc 2 Chapter 4-16 “Epilogue”.

Orbis Fatum

• Effect: Provides Shield and Temporary Damage Amplification.
• Unlock: Complete Arc 2 Chapter 5.

Special Ops Posse Unlocks

These are earned by completing Special Ops missions on Normal difficulty.

Truth Behind Grey Mist

• Effect: Grants STR and creates Insight.
• Unlock: Complete all missions in Daffodil’s “Phantom of the Rainy Town”.

Victory of Roses

• Effect: Draw cards and gain Temporary STR with Caro synergy.
• Unlock: Complete all missions in Sorel’s “Tribute to the Rose”.

Midsummer Vision

• Effect: Draws cards and reduces Arithmetica cost to 0.
• Unlock: Complete Lilly’s “The Magic of Storytelling”.

Miracle’s Dawn

• Effect: Grants STR and delayed defensive scaling after taking damage.
• Unlock: Complete Salvador’s “The Color of Blood”.

All of Her

• Effect: Increases Realm Mastery and Aliemus.
• Unlock: Complete 24’s “Serene Fission”.

Spring’s Verse

• Effect: Lets players choose one of four rotating poetry buffs.
• Unlock: Complete Horla’s “Rose’s Abode”.

A Gun’s Cry

• Effect: Creates Shining Octahedron Dice and grants crit rate.
• Unlock: Complete Ryker’s “Happy Hunting!”.

The Mountains’ Resolve

• Effect: Draw 2 Command cards from a selected Awakener.
• Unlock: Complete Helot: Catena’s “Elworth’s Returnee”.

Reunion Wish

• Effect: Returns a Command card from the discard pile.
• Unlock: Complete Ramona’s “Celestial Aria”.

Year-End Sparks

• Effect: Grants crit rate, Arithmetica, and Ancient Ember damage.
• Unlock: Complete “Spring Festival Express”.

Psyche Deepdive Posse Unlocks

The Final Vow

• Effect: Grants Crit Rate, temporary Power, and Death Resistance.
• Unlock: Complete Ogier’s “The Knight’s Wish”.

Bone-Chilling Embrace

• Effect: Grants delayed Shield and tentacle synergy.
• Unlock: Complete Sanga’s “Sculpted Like a Song”.

Roaring Blood and Sand

• Effect: Grants STR and boosts Embryo Fusion.
• Unlock: Complete Uvhash “Blood and Sand”.

Ephemeral Eternity

• Effect: Creates Strike and Defense cards with Exhaust and Fleeting.
• Unlock: Complete Erica “Twisted Core”.

Lakeside Glimpse

• Effect: Applies Poison and triggers Devour synergy.
• Unlock: Complete Agrippa “Pale Descendant”.

Gateway of Retrospection

• Effect: Searches your deck and reduces card cost.
• Unlock: Complete Ramona: Timeworn “One Step Away”.

Aurita’s Treasure

• Effect: Draws the lowest-cost cards and buffs tentacle damage.
• Unlock: Complete Aurita “Eadem Omnia”.

Feast of Decay

• Effect: Grants Counter and weakens enemies.
• Unlock: Complete Wanda “Feast of Flames”.

Giant’s Reign

• Effect: Restores Arithmetica while granting STR and crit bonuses.
• Unlock: Complete Goliath “The Fall of Giant”.

Blessing of the Stars

• Effect: Switch between Slumber and Arouse modes with Stellar Protection interactions.
• Unlock: Complete Tulu “Coronation Day”.

Undying Thunder

• Effect: Draw cards and gain Shield.
• Unlock: Complete Corposant “Final Steersmanship”.

Black Swan’s Dance

• Effect: Grants Aliemus and crit buffs.
• Unlock: Complete Liz “Passion to Dust”.

Undying Sun

• Effect: Restores Arithmetica and grants Temporary Damage Amplification.
• Unlock: Complete Kathigu-Ra “Everburning Vex”.

Void Hues

• Effect: Grants Aliemus and Insight generation.
• Unlock: Complete Pickman “Ghastly Canvas”.

Manor Echoes

• Effect: Grants Arithmetica and STR reduction debuffs.
• Unlock: Complete Xu “Whispers Behind the Fan”.

Drowned Innocence

• Effect: Grants Aliemus while activating Vortice synergy.
• Unlock: Complete Vortice “No More the Shore”.

Dreamscape Posse Unlocks

Festival of Tides

• Effect: Restores Arithmetica and applies huge Poison stacks.
• Unlock: Complete Miryam’s “Desecrate”.

Derision of Destiny

• Effect: Draws low-cost cards and buffs Castor.
• Unlock: Complete Castor’s “Beyond the Skies: Part 1”.

Voracious Resolve

• Effect: Discover and generate basic skill Commands.
• Unlock: Complete Agrippa’s “Culinary Dominion”.

Beachside Memento

• Effect: Creates Strike cards and eventually grants crit bonuses.
• Unlock: Complete Ramona’s “See You in Neverland”.

A Fleeting Dream

• Effect: Grants massive Shield and Temporary STR.
• Unlock: Complete Ramona’s “See You, Neverland”.

Sacred Bleeding Heart

• Effect: Draws cards while boosting crit damage and Sin Mark synergy.
• Unlock: Complete Pollux “Beyond the Skies: Part 2”.

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Multiverse Link Posse Unlocks

Tavern’s Opening

• Effect: Adds Leah’s Coin into the deck which draws cards and restores Arithmetica.
• Unlock: Complete “My Turn”.

From the Mist Realm

• Effect: Draw Strike cards and reduce their cost with Mouchette synergy.
• Unlock: Complete “Baptism of Silver and Blood”.

Mythag Shop Posse Unlocks

Unequal Exchange

• Effect: Draw 4 cards.
• Unlock: Purchase for 1000 Sediment in the Mythag Shop.

Strongest Posses Worth Prioritizing

While every Posse has its uses, some stand out much more than others depending on build type.

Best General Utility

• A Mouse’s Wisdom
• Gateway of Retrospection
• Symphony Fourth
• Unequal Exchange

These are amazing for card cycling and Arithmetica management.

Best Damage Scaling

• Obsession Eternal
• Miracle’s Dawn
• Undying Sun
• Roaring Blood and Sand

Excellent for aggressive STR-focused builds.

Best Poison Builds

• Plague of Illusions
• Festival of Tides
• Lakeside Glimpse

These completely dominate poison-focused teams.

Best Crit Builds

• Black Swan’s Dance
• A Gun’s Cry
• A Fleeting Dream

Strong for crit-heavy setups.

Morimens has far more Posse unlocks than most players initially realize, and many of the strongest ones are hidden behind side content that people often ignore. Some of the best support abilities in the entire game are tied to Dreamscape, Psyche Deepdive, or Special Ops rather than the main story itself.

Because of that, players who only focus on Operations progression end up missing huge build opportunities later on.

The good thing is that almost every Posse adds some kind of meaningful mechanic or synergy, so unlocking them rarely feels pointless. Whether you enjoy poison setups, crit stacking, Arithmetica spam, tentacle builds, or raw STR scaling, there are multiple Posses designed specifically around those playstyles.