I recommend to read this post in dark mode.
Hello and welcome to this updated Herrscher of Rebirth - Seele Guide!
Note: In this guide I'll only cover changes made by the divine key. If you're not sure how she works, check this guide first :)
I hope I will be able to help you, let's start~
✦ Table of contents ✦
Short Overview - Seele is back!
Abbrevations & Help
How to obtain?
Kit & Skills changes
Support Potential
Team & Rotations
Gameplay examples
Conclusion
✦ Short Overview - Seele is back! ✦
With the release of 8.5, Herrscher of Rebirth got a new weapon and Stigmata set.
Weapon: Sea-Cleansing Floret: Reciprocity Weapon
Stigmata: Serrated Comedy set / Aristophanes (T/M/B)
The new weapon allows her to use the Astral Ring and makes her a support. The following guide expects you to have these new gears.
✦ Abbrevations & Help ✦
Astral Ring
AR - Astral Ring
SO - Stellar Outburst
GoI - Grail of Infinitude
WS - World Star
QME - Quantum Mech Energy
Valkyries
HRB - Herrscher of Rebirth - Seele
HLE - Hi♪ Love Elf♥ - Elysia
BFD - Behold! Fate-Defying Dragon - Coralie
PA - Planar Armament: Warped Spacetime - Helia
FWS - Ba-Dum! Fiery Wishing Star - Kiana Kaslana
LP - Lone Planetfarer - Vita
In case you struggle understanding the Astral Ring system itself, I recommend following Guide:
✦ How to obtain? ✦
Herrscher of Rebirth will not have a supply during 8.5. If you do not have her, you can obtain her for 1680 B-Chips during the first 4 weeks of the patch.
Her new new gears will get its first supply during 8.5 though:
You're guaranteed to get her weapon within 60 pulls.
Meanwhile you're guaranteed to get one of her Stigmata or her Weapon ever 10 pulls.
On the global servers, these supplies release on October 23rd and end on November 21st.
✦ Kit & Skill Changes ✦
✧ General information ✧
Typing: Physical / PSY
AR Protection: World Star (WS)
Additional AR tag: Grail of Infinitude
Stellar Drain Intensity Regeneration: 10, +10 if WS/GoI is active
Special ATK: Combo ATK or Joint Weapon Skill
(Note: This ATK consumes her Stellar Drain, resets switch CD, etc.)
GoI SP Regeneration (SO): 115 (Special ATK) / 128 (Ultimate)
GoI max SP increase: 256
All of her DMG (except for Stellar Shift) is counted as summon DMG.
✧ New leader skill ✧
When choosing Seele as leader...
✧ World Star is activated
✧ AR Intensity: 150; SO duration: 25s; CD: 25s
✧ Seele gets buffed with each additional character with Domain Resonance tag tag
✧ Form switch ✧
Without the divine key, Seele could switch between Life Binder and Soul Shaper form via Ultimate. This is no longer possible.
If Grail of Infinitude is active, Seele is set to Soul Shaper form.
Otherwise Seele is set to Life Binder form.
✧ Life Binder Form ✧
🟄 Joint Weapon Skill
When switching out during her Joint Weapon Skill, she continues her attack for the full 4 seconds rather than the original 2s.
This deals 50% DMG of the original DMG while still consuming her Stellar Drain.
🟄 QTE
Her QTE now restores full Herrscher Charge.
🟄 Stellar Outburst: Resonance Mark
As the leader, Seele automatically places her Resonance Mark when Stellar Outburst is activates.
It can be triggered up to 18 times by other characters' Resonance ATKs and counts as summoned entity.
When other Resonance marks are placed, they're devoured by Seele's Resonance Mark and it automatically triggers 3 times.
🟄 Stellar Outburst: Resonance ATK
Upon entering Stellar Outburst, Seele gains 6 Quantum Mech Energy. Tap [ATK] to use QME in order to launch her Resonance ATK.
If she is not the leader, this ATK triggers Resonance Marks 6 times.
🟄 Stellar Outburst: Finisher
When Seele has no Quantum Mech Energy left she's able to use her Ultimate. That Ultimate is replaced with a Finisher.
If he's the leader, instantly ends Stellar Outburst.
✧ Soul Shaper Form ✧
🟄Ultimate Evasion Skill
Like before, normal evasion triggers her Ultimate Evasion Skill.
If her SP are below 190, they're restored to 190.
🟄 Ultimate
SP: 175 | CD: 18s*
*7s less than before
When casting her Ultimate with more than 175 SP, she consumes these additional SP to grant more buffs. This caps at 60 more SP.
After entering via QTE her normal SP cost is reduced to 0.
✦ Support Potential ✦
✧ Analysis ✧
Currently she sadly doesn't seem to be an especially strong support.
For World Star she's an alright option if you don't have the BiS Supports, she will do the job just fine. Currently no other World Star DPS really shines, so I doubt she'll be used for this purpose often.
For Grail of Infinitude she might shine in Memorial Arena. She has a lot of Time Stop in her kit, which helps in MA. However, for abyss her support capabilities are simply bad. She just deals way more DMG than any other support combination.
Regardless, she is an Impair provider. 75% is the highest Impair we currently have in part 2 and as far as I'm aware she should keep that impair in Grail of Infinitude teams - so maybe she will shine as support for a future physical Grail of Infinitude unit, we'll see.
✦ Teams & Rotations ✦
✧ World Star (DPS) ✧
Please refer to this time tag for the full rotation (time tagged):
Usually, her supports are a combo of Hi Love Elf - Elysia / Lone Planetfarer - Vita / Ba-Dum! Fiery Wishing Star - Kiana
Astral Ring Charging:
HRB Weapon Skill > Joint Weapon Skill
Supports
HRB QTE > Ultimate > Combo ATK > Joint Combo > repeat [Basic ATK x4 > Combo ATK > Joint Combo] until Stellar Outburst is ready.
Stellar Outburst:
HRB Resonance ATK
Supports Resonance ATKs
HRB QTE > Combo ATK > Joint Combo > Ultimate
Note: Especially her Stellar Outburst rotation might be changed a lot depending on the situation. Sometimes you might save the last part of the resonance ATK, sometimes you might do 2 QTEs + Combo (one after each support)
✧ Grail of Infinitude (Support) ✧
Astral Ring Charging:
HRB Evasion > Ultimate > Weapon Skill*
Second Support > DPS rotation
HRB QTE > Joint Combo
Second Support > DPS rotation
*spam the Weapon Skill during the animation and instantly switch out.
Stellar Outburst:
DPS rotation
HRB QTE > (Joint Combo) > Ultimate
Second Support > DPS rotation
✦ Gameplay Examples ✦
And I refuse to record gameplay examples on GLB beta cause its at 480D and I cannot shot anything 
✦ Conclusion ✦
Should you pull HRB's new divine key?
Looking at it, her divine key sadly doesn't appear to be especially strong. She got a rather low coverage and her support isn't really great.
However, she has the usual 10~20 ATK in it. While HRB herself might not be great, this ATK buff affects all your characters and divine keys stack up. Also it's only 60 pulls at max for synergy 1. So if you have pulls left after Elysia, she definitely is a good pull for that.
If you're a returner and just came back for Elysia I highly recommend it as long as you have Herrscher of Rebirth. While she might not be the best support, she's way better than no Part 2 Symbiosis character at all and cheaper than other Valkyries. This way you can build a team for Ely more quickly :)
Credits
- Thanks to Cyxo and Alpaca for the pictures of Valkyrie icons and such!
- Love to Inari
- Website for official wallpapers in case you're interested, here
Thank you for reading my guide, I hope I was able to help you!
Have a great day and fun with Seele~ 
