Universal Derivation Event Guide

This is a Universal Derivation event guide for Sword of Convallaria (SoC). Read on for a strategy guide, tips, and recommended characters to progress through the event efficiently!

Universal Derivation Overview

Event Overview

Universal Derivation is a multi-stage combat event where you'll take on numerous stages back-to-back. Clear them in order to earn a range of valuable rewards, including Hope Luxites, Primordial Powder, and Astral Shards, which can be traded for powerful gear.

Special Rules Apply

No Endurance is required to participate. You'll progress through stages in sequence, earning rewards every 1st and 5th stage cleared. Keep in mind: once a character has been deployed, they can’t be used again without special recovery methods, and enemy HP carries over between battles.

How to Progress Universal Derivation

Efficient Progression Strategy

Challenge the Event Stages

Start by challenging the event stages. Each one features unique Stage Mutations that affect both enemies and allies, so be sure to check them before jumping into battle. Also, you won’t need any Endurance to participate.

Note!	Rewards are given for every stage, and additional rewards are given every 5 stages cleared.

Utilize Support Characters

In addition to your trained Elysium Characters, you can also add Support Characters to your team. Just keep in mind that Support Characters share Fatigue with Elysium characters, meaning if you use a Support Rawiyah, your own Elysium Rawiyah will also get Fatigued, and vice versa.

Recover Fatigue and TP

Characters who participate in battles will become Fatigued and won’t be available for the next round. Additionally, TP (used for Tactical Skills) has a fixed cap and doesn’t recover between battles. You’ll receive one recovery charge per day at 0:00, so once you've pushed as far as you can, use it to restore your characters' Fatigue and TP.

Up to 6 Recoveries Can Be Stored

Each recovery charge restores Fatigue and TP for all characters. You can hold up to six charges, giving you the flexibility to use them according to your preference.

Cycle Between Challenges and Recovery

Repeat the cycle: challenge stages with your full roster, then recover Fatigue and TP. The event includes many increasingly difficult stages, so pace yourself as you aim for fully completing the event.

Enemy HP Is Carried Over

If you lose a battle, don’t worry—the enemy’s remaining HP will carry over to your next attempt. If your team is underpowered, chip away at tough enemies across multiple tries.

Exchange Collected Astral Shards for Items

You’ll earn rewards such as Astral Shards, Hope Luxites, Primordial Powder, and more. Astral Shards can be exchanged in the shop for powerful Legendary gear.

Participate in the Crisis Challenge

Once the event has been underway for a while, the hard-mode Crisis Challenge will become available. You’ll unlock it by clearing all stages in the Battlefront, and completing it will earn you a limited-time title.

Universal Derivation Strategy Points

List of Key Strategies

Train a Large Roster of Characters

Due to the Fatigue system, characters that have been deployed once can’t be used again until they recover. Training a wide range of units—including low-rarity ones and those you might not typically use—will increase how far you can progress before needing to stop and recover, making it much easier to handle the event overall.

Best Characters Tier List

Gear Can Be Reused

While Fatigued characters can’t be deployed again right away, Gear can still be reused. So, you don’t need to upgrade a huge number of Gear pieces. That said, since Engraving Resonance compatibility varies by character, having a good variety of Gear available will make it easier to advance through the event efficiently.

Engraving Guide

Upgrade Your Strongest Tactical Skills

Boost Tactical Skills that have a high impact, like Ragnarok, which dishes out massive area damage, or Flag of Convallaria, which grants powerful buffs to allies in range. In particular, Ragnarok is great to use proactively when you're outmatched, since it can deal heavy AoE damage even in unfavorable situations.

DoTs and Piercing DMG Are Highly Effective

Use DoT effects like [Scorch] and [Infection], along with Piercing DMG like [Life Loss] that bypasses both enemy defense and Shields. This is especially helpful when your team lacks offensive power, as these effects allow you to chip away at enemies regardless of their defense level.

Go for Fall Kills Using Knockbacks

Fall kills and collision damage from knockback are surprisingly effective. You can even take down bulky enemies this way, so it’s definitely worth aiming for whenever possible.

Chip Away at Enemy HP—Even if You Lose

Because enemy HP carries over between attempts, it’s often worth sacrificing a weaker team to whittle down bosses or difficult enemies. Even low-rarity characters can contribute meaningful damage if you equip them with Piercing DMG tools and play strategically. Keep chipping away until victory is within reach.

Recommended Characters and Gear

Characters with Piercing/Damage over Time are Recommended

If your Power isn't fully developed, it's recommended to form a team with characters who have Piercing/Damage over Time Skills that are effective even with low stats. As long as Piercing DMG isn't significantly reduced, you can expect them to be effective even at low Levels.

List of Characters with Piercing DMG Skills

Cocoa	Auguste	Safiyyah
Garcia	Caris	Nightingale
Suppression	Lash	Enforcer
Night Raven	Knighted Guard	Outlaw Guard
Outlaw Crossbowman	Recruited Pikeman	Agata
Tristan	Kvare	Afra

List of Characters with Damage over Time Skills

Momo	NonoWill	LilyWill
Iggy	Cocoa	Beryl
Stinger	Agile Eye	Nightingale
Flame Sorceress	Darklight Fire Priest	K.A. Fire Conjurer
Vlderian Scout	Outlaw Archer	Outlaw Crossbowman
Outlaw Assassin	Bitterwort	Kvare
Luvata	Afra	Nydia

Recommended Low-Rarity Characters

Piercing DMG with Weapon Eroder/Armor Eroder

Skill	Effect
Weapon Eroder	Range 1-3 tiles. (Piercing DMG) Single-target attack. Deals [Piercing DMG] equal to 30% of the target's HP, and applies [▽ATK II] after the attack, lasting for 2 turns.
Epic or lower characters who possess this
Nightingale	Outlaw Guard	Outlaw Crossbowman

Low-Rarity characters with the powerful Skills [Weapon Eroder] and [Armor Eroder], which deal Piercing DMG equal to 30% of HP from a Ranged distance, are easy to use and recommended. 'Nightingale' is especially recommended among the above, since she also has the powerful panel-changing Skill [Burning Grenade] in addition to healing Skills.

Inflict Damage over Time with Luxite Sharpnel

Skill	Effect
Luxite Sharpnel	Range 1-3 tiles. (Piercing DMG) Deals [Piercing DMG] equal to 10% of HP to all enemies within a 2-tile radius of the target and applies 3 stacks of [Infection].
Epic or lower characters who possess this
Stinger	Vlderian Scout	Outlaw Assassin
Outlaw Archer	Bitterwort

Characters with [Luxite Sharpnel], which inflicts the Damage over Time [Infection] from a Ranged distance in addition to Piercing DMG, are also recommended. Among the above, Stinger and Vlderian Scout are particularly powerful. 'Stinger' has [Infected Dagger] which applies Infection, and 'Vlderian Scout' has excellent movement range.

Healers are Also Important

Angel	Lash	Candlelight
Butterfly	Nightingale	Flare
K.A. Light Conjurer	Bitterwort

Characters who can act as healers to restore allies are also important, as you tend to run short of them when challenging with multiple parties. Angel who has a particularly high healing amount, and Lash and Nightingale, who also have Piercing DMG Skills, are especially recommended.

Gear with Piercing/Damage over Time Effects

Ever-Burning Blade	Skeleton Spear	Star-Raid Crossbow
Whale Hunter	Resentment Broom	Flying Blade Armguard
Roaring Flint	Course of Fortune

There is also Gear with effects that deal Piercing DMG or Damage over Time, so if you have them, equip them before challenging the stages. Even characters who are not highly trained may be able to deal effective damage.

Gear Tier List

Universal Derivation Rewards

Get Rewards for Every 5 Floors Cleared

For every 5 floors you clear, you’ll earn a variety of rewards from a Reward Chest. The lineup includes Astral Shards, which are hard to come by, as well as Hope Luxites and Legendary Gear—so be sure to aim for those.

Exchange Astral Shards for Gear in the Shop

Astral Shards can be exchanged in the Shop under "Exchange" → "Gear" for a random Legendary Trinket (200 shards), or any Legendary Gear of your choice (600 shards). You can also spend 200 shards for an Astral Forge, which grants one of three predetermined pieces of Gear at random.

Get Rewards for Clearing Event Missions

Complete event missions by participating in battles and performing recoveries a set number of times. You can earn rewards like Hope Luxites, Castalia, and Legendary Gear—so aim to clear all of them.