Phainon is the latest 5-star Physical character who is currently dominating the meta with his unique skill gameplay mechanics. So to bring out the most out of him, players would need to build a team with specific other characters who synergize well with his unique kit.
That is why in the following part we will discuss some of the best Phainon team that can deal with all the end-game contents like Pure Fiction, Memory of Chaos, and more.
Best Team comps for Phainon in Star Rail 3.4v
1) Phainon+ Sunday+ Bronya+ Robin ( Best Premium Team)
In this comp, Phainon is the main DPS, and due to his unique kit he will needing buffers who can constantly hit with with buffs. The more those buffers target Phainon the faster he will charge his Ultimate. These buffers act as battery, and eventually Phainon will cast his Ultimate and he will enter a territory where he will solo fight against the boss, while the buffs that were put on him by Bronya and Sunday will eventually boost the damage output during those solo fights.
While Robin can use her Ultimate which will advance the entire team's action, giving Sunday and Bronya another rotation to quickly fill Phainon's Ultimate. The only problem in this comp is the Skill Point usage issue for Bronya and Phainon, but it can be solved if the player has E1 Bronya or the signature LightCone of hers.
This comp can clear almost any end-game content until they suffer from the Skill Point issue.
2. Phainon+ Tingyun+ Bronya/Ruan Mei+ Lynx (Free-to-play)
As Phainon is a unique character who fights his foes alone when in his ultimate form, it is recommended for the players to build a team that can constantly target him with buffs. That is why in this F2P team comp, players are advised to run Tingyun along with Bronya or Ruan Mei (hoping they got them from Standard banner or chose one of them when the offer was there).
Tingyun is one of the strongest 4-star units in Honkai Star Rail, and with her abilities, she provides strong buffs to Phainon, which will result in providing Phainon with 3 Coreflames just like Sunday.
Hoping the player has secured Bronya or Ruan Mei, who are among the top Harmony characters and can elevate any character's DPS potential to remarkable heights. If the player can field any of these two units, they can greatly buff Phainon's DMG output while generating his Ultimate by constantly hitting him with the buffs. While Lynx can just keep the team alive with constant healing.
3. Phainon+ Robin+ Sunday+ Sparkle (Premium Team)
This specific composition depends heavily on the support units that make sure to enhance Phainon's effectiveness on the field. In this comp, Sunday and Sparkle buff Phainon's damage output by boosting ATK and Crit values significantly. Moreover, Sunday and Sparkle can provide additional action forward which helps to keep Phainon in the cycle as much as possible.
Robin acts as the whole team's buffer who can buff the overall damage and Crit values of the entire team. With her Ultimate, she advances the whole team by a cycle, giving a huge advantage to her allies