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Aden Laboratory and its active effects in L2 Reborn Guardian
GUARDIAN SYSTEM

Aden Laboratory

A permanent progression system where Exploration Reports reveal boss cards, complete research pages and unlock randomized Special Stage bonuses.

Daily Reports
8
Card Cost
1 Report + 25k
Pages per Cycle
4
Special Research
50k Adena
⚡

Quick Start

The complete cycle in four steps.

Farm Daily
8 Reports
Keep Them
Reveal Cards
25k Adena
Per Card
Each Page
Permanent Stats
Immediately
Special Roll
50k Adena
Avoid Chasing

Overview

Aden Laboratory progresses through research pages. Each page hides one correct boss card among several wrong cards. Selecting the correct card completes the page, permanently applies all effects assigned to it and automatically moves the character to the next page.

After four correct boss cards, which means four completed pages, so the Special Stage becomes available. This stage provides an additional randomized property whose strength depends on the level rolled.

Permanent progress: unused Aden's Exploration Reports remain in the inventory and can be saved for future days.

How to Access Aden Laboratory

1
Open the main menu

Click the menu button in the bottom right corner of the game interface.

2
Select Aden Laboratory

Click the Aden Laboratory icon in the general menu to open the current research page.

Aden Laboratory icon in the main menu
Aden Laboratory is accessed from the bottom right general menu.

Aden's Exploration Reports

SourceDaily AmountUse
Monster farming8 ReportsOne Report is consumed for every card selected.

Each card selection costs 1 Aden's Exploration Report and 25,000 Adena. Reports that are not used remain in the inventory, so missing a research session does not destroy the materials already farmed.

Budgeting: eight card selections cost 200,000 Adena in total. The number of completed pages obtained from those eight Reports depends on how quickly the boss cards are found.

Card Research

Every page contains exactly one correct boss card. The success rate displayed at the bottom represents the number of correct cards remaining over the total unopened cards.

1
Select a card

The game consumes one Report and 25,000 Adena.

2
If the card is wrong

It is burned and removed from the pool. The correct card remains, so the next probability improves. For example, 1/32 becomes 1/31.

3
If the boss card is found

Every effect shown at the top of the page is applied automatically. The page is completed and the next one opens immediately.

Aden Laboratory card research with one correct card among eight
This page has one correct card among eight unopened cards, giving a 1/8 success rate.
No duplicate failure: a burned card cannot be selected again on that page. Every miss moves the player closer to the guaranteed boss card.

Pages and Permanent Effects

Completing a page requires finding its boss card. The effects displayed at the top are granted automatically, and a page may provide more than one statistic at the same time. Four completed pages unlock the Special Stage.

Examples visible in GuardianPurpose
P. Def. / M. Def.Permanent defensive stats
Max HP / Max MPResource and survivability increases
Atk. Spd. / Casting Spd.Attack or casting speed
SpeedMovement speed
HP Recovery Potions' EffectImproves potion recovery
Multiple effects per page: the summary window only displays the first statistic of each completed page. Secondary statistics are still active even though they are not listed there.

Special Stage

After completing four normal pages, the Special Stage rolls an additional property. Clicking Begin Research costs 50,000 Adena and generates a new level according to the probabilities shown on the right side of the interface.

1
Roll a new property level

Begin Research generates a result but does not immediately replace the current setting.

2
Compare both results

The current setting remains at the top and the newly rolled setting appears below it.

3
Keep or replace

If the new result is worse, simply roll again or leave. If it is better, click Property Replacement and pay 1,000,000 Adena to apply it.

Aden Laboratory Special Stage with property levels and success rates
The right panel shows the exact growth value and probability for every available level of the current property.
Example: the screenshot shows a current P./M. Atk. Lv. 5 bonus of +10 and a newly rolled Lv. 8 bonus of +19. Property Replacement is required to equip the stronger result.

Auto research

Auto research repeatedly spends 50,000 Adena per roll until the result reaches or surpasses the selected target level. This is a convenience tool, not a discount.

Aden Laboratory Auto research target level configuration
Set a target only after checking its probability and the Adena you are willing to spend.
Potentially very expensive: rare levels can have extremely low probabilities. A 0.01% target averages one success in 10,000 rolls, which would represent 500 million Adena at 50,000 per roll. Random results are never guaranteed at the average, so actual spending can be lower or much higher.

Checking All Active Effects

Click the magnifying glass icon in the top right corner of Aden Laboratory to open the Effect on Receipt panel. It separates Special Stage properties from the general effects earned through normal pages.

Aden Laboratory Effect on Receipt summary
The panel summarizes acquired stats, but only lists the first effect from each normal page.
Display limitation: if a page grants Atk. Spd. +80 and P. Atk. +30, the summary may show only Atk. Spd. +80. The hidden P. Atk. +30 is still applied to the character.

Efficient Strategy on a New Server

1
Farm all eight Reports

They are permanent materials and can be accumulated even when Adena is needed elsewhere.

2
Progress normal pages consistently

Normal research gives permanent effects and wrong cards permanently improve the odds on the current page.

3
Accept a reasonable Special result

Early in the server, equipment and core progression usually provide better returns than repeatedly chasing a rare laboratory level.

4
Avoid aggressive Auto research targets

Use the probability panel to estimate the risk and establish a strict Adena budget before starting.

Common Mistakes

MistakeImpact
Assuming failed cards waste progressEvery miss removes a wrong card and improves the next chance.
Thinking Begin Research equips the resultProperty Replacement and 1 million Adena are required to apply it.
Setting a very rare Auto research targetThe system can consume a very large amount of Adena automatically.
Trusting the summary as a complete stat listSecondary page effects are active but may not be displayed.
Overspending during early progressionOther systems may offer substantially better value during the early stages of a server.