Introduction 

Welcome to my [ Beta 5.9 Guide ] Goushinnso Memento (Yae Sakura) guide to Elysian Realm! I'm a huge fan of Yae sakura's design and was eagerly waiting for her to join ER. Finally, my wish has been granted.
Let's have a look at Memento Kit in ER.

Table of contents
------ 1. Stage effects and buffs update -----------------------------------
------ 2. Newly added signets and support valks update ------------
------ 3. Memento signets Recommendation -----------------------------
------ 4. Finality Gameplay ------------------------------------------------------
------ 5. Conclusion ---------------------------------------------------------------

Stage effects and buffs

Take someone who summons entities to negate 30% total dmg reduction from enemies. Vicissitude and infinity get level boosted. Memento can use Vicissitude in conjunction with Kosma and Kalpas. Looking at the buffs, you don't need to fight HoD on floor 17 anymore. HoD is replaced by Tonatiuh. From my experience, fighting tonatiuh is much easier than fighting HoD.
Aside from range buffs, using weapon active also buffs your valkyrie. Memento can fully take advantage of the buffs.

Newly added signets and support valks update

Stygian Nymph Support Valkyrie

Stygian Nymph (SN) was added as the new support in ER.
SN gathers enemies, removes one quantum layer, and increases valkyrie's Total damage
by 15% for 15 seconds. Her CD is 30 seconds.

2nd Core of Daybreak

Ko**a 2, Kalpas 2, and Hua 2 together can be used by any valkyrie and it is strong. Ko**a 2 gives damage while making you lose HP, Kalpas signets benefit from low HP, and Hua 2 saves you from dying. You will most likely have 1HP all the time.
The requirement is even simpler than the Stars and Discipline signets requirement. To quickly lose HP in starting floors you can use Blood Rose support valkyrie.
Adding Reverie Core 1 signets provides even more damage.

2nd core Helix

I highly recommend this core for valkyrie who uses weapon active quite frequently like Vill-V, FT, and SI. This core also takes care of gathering enemies.
The buffs provided are powerful. Core2 is much better than core 1. With the help of Muramasa, you can use this signet with memento.

2nd core Reverie

Reverie core 2 is the exact opposite of core1. Core 1 gives buffs the more silver coins you have and core 2 gives buffs the more you spend on felis shop.
For every 200 silver coins spend, you get VIP status which lasts for 4 floors (can be upgraded upto 6 floors). You will lose all the buffs once VIP status ends.

Memento signets recommendation


Elysia Signets

Must have to play Memento in ER.


Must have to play Mememto in ER.


Increases the cap of deep freeze (You deal a lot more damage) and can start the floor with ultimate directly.


I will highly recommend to not get this signet unless you go with Kevin and Eden. This signet can in fact ruin the way you play meme in ER.
You will consume a lot more KE and your rotations will become very short.


Not needed

General Signets
Setsuna (1st Priority)
In ER, Memento refills the KE bar using ultimate evasion. Since most of the damage comes from her charge attack, you will be using Ultimate evasion all the time. Setsuna Signets are perfect for her. It's her signet after all. Take core 1.
Discipline (2nd Priority)
Memento uses basic attacks, uses Evasion, and uses Weapon Active, which makes her a good user of Discipline Signets. Discipline core 2 is a good fit for her.
Vicissitude (2nd Priority)
Or you can use Vicissitude first then Discipline. In version 5.9, Vicissitude is level boosted which can help a lot in early floors. Take core 2.
Alternative Signets (1 HP gaming)
I mentioned it in the infographic as well. Hua 2 (Vicissitude), Kalpas 2 (Decimation), and Kosma 2 (Daybreak) is a general combination that any valkyrie can use. The damage output is very solid. Daybreak 2 provides damage and heals you, Decimation 2 converts all healing to buffs and further boosts damage, and Vicissitude 2 again provides buffs and prevents you from dying.
My 9 minutes Finality run had Kosma 2, Hua 2, Kalpas 2 and Sakura 1.

Support Valkyries
AE and BR for damage boosting.
for Version 5.9 exclusive, Swap to SN as most of the enemies are QUA. Tonatiuh has 2 quantum layers.

Support Sigil 2

She uses ultimate evasion all the time. This is best for her.


If you go with Hua, Kalpas, and Kosma combination. Kosma Support is also a solid option.

Finality Gameplay

Conclusion
Memento is okay-ish in ER.
1. In version 5.9, most of the enemies will be QUA and F17 HoD is replaced with Tonatiuh Sunshade
2. Vicissitue and Infinity has level boosted.
3. Memento doesn't work well with Stars 2.
4. Memento works well with Setsuna 2 and Discipline 2.


