Xiao is a pretty fun character to play with as he is able to effectively use plunge attacks to deal massive damage to the enemy. However, he does fall short in terms of reaction damage and support potential. His burst also drains his HP, requiring him to have access to a healer. The best set for him currently is the 2-piece Viridescent Venerer and 2-piece Gladiator’s Finale. I included another build on my site that uses the 4-piece Retracing Bolide if you are tired of using his plunging attack and want to spice things up!
Read the full review: The Informal Gamer
This build emphasizes the use of Xiao’s burst to deal increased Anemo DMG to enemies. It will focus on Xiao’s Crit DMG and Crit Rate to deal even more damage. While in his burst form, Xiao will continue to lose HP until the duration of his burst ends or he switches out. At full health, the health drain shouldn’t be a problem, especially if you have a healer like Barbara on your team. However, he will need to be careful of enemy hits while he uses his burst, as the hp drain combined with enemy damage can prove to be deadly for him. For his team, I recommend units that can deal passive damage while Xiao is in his burst form, as you can not switch to another character without canceling out Xiao’s burst. Fischl’s elemental skill allows her to summon Oz to deal passive Electro DMG when she is not on the field and can provide energy. Having another Anemo character like Venti or Sucrose, will allow Xiao to recharge his burst faster and consume less stamina with his charged attacks. For his skills, focus on maxing out his normal attack and burst as his burst will act as a damage multiplier for his normal attack. Xiao’s elemental skill can also be helpful, but takes less priority for this build. This build works well for all of Xiao’s attacks, especially his plunging attacks.
For his recommended weapon, the 5-star Primordial Jade Winged-Spear is currently the best weapon to use with Xiao. This weapon boosts Xiao’s Crit Rate and will also increase his ATK for 6 seconds every time he hits an enemy. This passive effect has a maximum stack of 7. When he is at max stacks, Xiao’s overall DMG will increase based on the weapon’s refinement level. The Primordial Jade Winged-Spear scales well with Xiao’s DMG output, especially his plunging attacks. The Crit Rate sub-state allows Xiao to focus on Crit DMG on his artifacts. The 5-star Skyward Spine can also work as its passive effect will increase Xiao’s attack speed and Crit Rate. It will increase his energy recharge and can create a vacuum blade when Xiao uses a normal or charged attack.
The Blackcliff Pole is another weapon you can use that will increase Xiao’s Crit DMG. It is a 4-star weapon from the Starglitter Exchange. After defeating an enemy, Xiao will gain an attack buff based on the weapon’s refinement level for 30 seconds. He can have a total of 3 stacks with this buff and each stack has an independent duration from each other. The main benefit of this weapon is the Crit DMG bonus that will allow Xiao to deal massive damage when he lands a critical hit. The passive effect is a nice bonus, but requires Xiao to defeat an enemy first before activating. This doesn’t work well in boss fights if there is only 1 enemy to defeat.
The Deathmatch from the battle pass is another viable option that will increase Xiao’s Crit Rate. When there are less than 2 enemies around, Xiao will gain a 24% ATK buff at refinement level 1. However, if there are more than two enemies, Xiao will gain a 16% buff to his ATK and DEF. The conditions are more favorable than the Blackcliff Pole, but Xiao will sacrifice the Crit DMG that comes with that weapon.
For Xiao’s recommend artifact set, the 2-piece Viridescent Venerer, and 2-piece Gladiator’s Finale will increase both his Anemo DMG and ATK. The 4-piece Viridescent Venerer won’t benefit Xiao as his skill set doesn’t utilize the Swirl reaction. The 4-piece Gladiator’s Finale can also work, but Xiao’s plunging attack won’t get the 4-piece bonus.
For the main stats, go for an ATK% Sands, Anemo DMG Bonus Goblet, and a Crit DMG/ Crit Rate Circlet. I recommend going for a Crit DMG Circlet to increase the power of his critical hits and focus on Crit Rate in the sub-stats. Xiao also gets a decent bonus to his Crit Rate based on his ascension level. For the sub-stats look for; Crit DMG, Crit Rate, ATK%, and ATK. Energy recharge will also suffice to recharge his burst faster. HP isn’t as important as the more HP he has, the more HP will be drained from his burst.