Yanfei is a 4-star Pyro user in Genshin Impact, and she works well in a DPS role. The best team comps for Yanfei work to trigger Elemental Reactions and increase her DPS output; however, she can also be used as a support DPS if players need that role filled instead. For F2P team builds for Yanfei, there's thankfully a great option that utilizes only free characters.
Yanfei debuted in Genshin Impact 1.5, but she's expected to be featured on a Banner rerun as part of the upcoming — but delayed — Version 2.7 update. Although Yanfei isn't a F2P character herself, she works well with a number of free characters. The important part is finding characters that can boost her DMG output while also triggering Elemental Reactions like Melt and Vaporize to really bring the hurt to nearby foes.
Related: Genshin Impact 2.7 Banner Leak — Which Characters Are Playable Next
A F2P team comp for Yanfei in Genshin Impact should include another Pyro character in a support role. This is because there's a 25% ATK buff for having two Pyro characters in the party. This resonance bonus means Yanfei and other party members have their ATK stats boosted, which works out well for everyone on the team.
For a F2P team comp for Yanfei, Xiangling works best as the additional Pyro character. She could be obtained in a variety of ways for free previously but is most commonly acquired by checking out the Spiral Abyss. Xiangling helps grant the resonance bonus of two Pyro users, but her Elemental Skill — Gouba — also helps Yanfei gather elemental energy.
Barbara also works well on a F2P Yanfei team, assuming players acquired her for free during the Genshin Impact Summertime Sparkle event. She can provide helpful heals to the party and her Hydro abilities
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