Combat Action: When your active character is Keqing, equip this card.
After Keqing equips in this card, immediately use Stellar Restoration once.
When your Keqing, who has this card, equipped, creates an Electro Elemental Infusion, it will have the following effects: Starting Duration (Rounds) +1, Electro DMG dealth by the attached character +1.
(You must have Keqing in your deck to add this card to your deck.)

[HSR]
There's two Phainon's splash art drawn, but don't know if hyv choose to release all of them or not.

Source via Tieba Uncle Greekmilk

Oh well atp

Some lore infos, not too many spoilers, it's better to experience it first handedly
Phainon's Role as the “Deliverer”:
- “Phainon's current portrayal only reflects a fragment of his journey. His worthiness of the ‘Deliverer’ title will become unequivocally clear as his arc unfolds.”

Protagonist’s Centrality:
- “Allegations of Phainon overshadowing the protagonist are unfounded. Both Phainon and Cyrene recognize the protagonist’s irreplaceable significance in Amphoreus. Rest assured, the narrative firmly centers on the player's role.”

Kevin Parallels & Identity Speculation:
- “While Phainon shares superficial traits with Kevin, their experiences diverge drastically. Phainon currently embodies a ‘Greek Kevin’ phase (youthful idealism), whereas the Flame Reaver mirrors Kevin’s *mature worldview*. The question ‘Is Phainon the Flame Reaver?’ defies a binary answer — it’s a narrative paradox best experienced firsthand.”

Via Greek Milk

[HSR][STC]
Cerydra is a single-target support
Provide extra turn after teammates action
Source via Luna

You can choose not to buff a character and keep their old kit.

Via Luna

Once again, these characters will go through beta testing like anyone else, everything is heavily STC

Also, Sparkle SP should be just the one that was shown in her myriad celestial trailer, this info itself is a year old and it regards a character that should be coming in 4.X, heavily STC as well

Via Luna

[...] The reason is that Phainon's skill set is way too unique—it has so many unconventional mechanics compared to other characters. The sheer novelty is on par with 2.0’s Acheron[...]

Via shiroha

The kit will be leaked in ~ 1 week, too much hype around it

1 skill... At least 6 left to go

About Phainon’s skill

Take reference from Mavuika’s Charged Attack: swap the ring effect to golden and enlarge it significantly.

#UncleMoon

Additionally, Phainon has broken through the core programming - after activating his Ultimate, the enhanced state will display three simultaneous skill buttons: Q, E, X.

#Luna

there's a bit of extra yapping from galaxy
luna post just said
"Fun fact: When Phainon is in an enhanced state, he has three skill buttons: Q, E, and X."

there's the possibility that X is just for canceling like DHIL

he still has 7 combat skills, a charging mechanic would fit

[HSR Future] "Gacha Animation"

2 more characters in 3.4 will have a Castorice style "Gacha Animation". Can't confirm who at this time but we feel like it's quite obvious lol.

Some say Dan Heng • Imbibitor Lunae already has three buttons — true, but to clarify: Phainon actually has three active skills. Even the cancel icon counts as a skill.

#Luna #UncleMoon

[Story Spoilers]

The Flame Reaver knows everything. Phainon and Mem remain unaware for now. As for the other Chrysos Heirs…they know nothing

#UncleGreekmilk

[HSR]
Spoilers:
Flame Reaver stabbing on Phainon by using his sword, Phainon then transform into a mysterious white hair, golden pupil double wings form. Flame Reaver then disappear.

Source via Tieba Uncle Greekmilk