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With Iansan’s arrival inGenshin Impact’s version 5.5, finding the right weapon for her is key to unlocking her full potential as a support character. Since her ATK buffs scale with her total ATK and she has high needs for consistent Elemental Burst uptime, her weapon choices can greatly impact her effectiveness. Iansan benefits the most from weapons that boost her ATK and ER, but weapons with additional team-wide buffs also make excellent options.
Luckily, players have a wide range of choices, from premium 5-star weapons to F2P-friendly 4-star alternatives, and players don’t necessarily need to go for premium options to reach the ER and ATK ceilings, as long as they can give her suitable artifacts. Generally speaking, players will need to stay around 150-200ER (depending on team comp, and whether they have access to her C1) and around 2500–3000 ATK (C5) to reach the ATK ceiling through her Elemental Burst. Here are her best polearm options inGenshin Impact.
5Skyward Spine
TheSkyward Spineis a viable option for Iansan, especially for players looking for a non-premium 5-star weapon to complement her support-oriented playstyle. One of its biggest advantages is its high base ATK, which significantly contributes to increasing Iansan’s total ATK. Additionally, its ER helps maintaining consistent Burst uptime. This combination of a strong base ATK and sufficient ER makes the Skyward Spine a reliable choice as a stat stick, particularly for players who lack access to more synergistic 5-star options like the Calamity Queller or Engulfing Lightning.
However, since Skyward Spine’s passive effect is not so useful for Iansan in practice, it still falls behind the other options, including the 4-star polearms on the list.
4Favonius Lance
TheFavonius Lanceis widely regarded as one of thebest support polearmsinGenshin Impact, for units that need high Energy Recharge, while also providing the wearera battery-like function for the team, further improving the overall energy flow in the party and making it especially useful in teams that lack dedicated battery characters.
To fully leverage the Favonius Lance, players need to invest in some Crit Rate on Iansan so that her passive effect procs consistently. This typically means using a Crit Rate Circlet instead of an ATK one for Iansan specifically. However, players can easily compensate for this by equipping ATK Sands instead of an ER one to ensure Iansan reaches the desired ATK cap for maximizing her Elemental Burst buffs. For players with herC1or those in teams with strong energy generation (such as double Electro compositions), this adjustment becomes even more manageable. Overall, the Favonius Lance strikes a great balance between energy management and supportive utility, making it an exceptional and accessible option for Iansan in most team setups.
3Tamayuratei No Ohanashi
TheTamayuratei No Ohanashiis a strong 4-star option for Iansan, offering excellent synergy with her kit. With a 565 Base ATK and a 30.6% Energy Recharge secondary stat, it provides the same base stats as the Favonius Lance, making it similarly suitable for her role as a support. The key difference between the two lies in their passives, which ultimately determines the choice between them. While Favonius Lance focuses on generating Energy particles for the team, Tamayuratei No Ohanashi boosts Iansan’s own ATK by 40% and enhances movement speed by 10% for 10 seconds after using an Elemental Skill. This makes it a better choice for players prioritizing Iansan’s total ATK over team-wide energy regeneration, particularly when aiming to hit her ATK cap.
For players with C5 or C6 Iansan,Tamayuratei No Ohanashibecomes even more favorable over Favonius Lance. At these constellations, Iansan’s Elemental Burst talent increases the ATK cap from2500to3000, making additional ATK highly valuable. The weapon’s passive contributes directly to achieving this, ensuring that Iansan can maximize her buff potential. Furthermore, this weapon was introduced as part of the flagship event in version 5.4,Enchanted Tales of the Mikawa Festival. As a fully F2P event weapon, most players should have obtained it shortly before Iansan’s debut, making it an accessible option.
2Engulfing Lightning
TheEngulfing Lightning,Raiden Shogun’s signature weapon, is an excellent choice for Iansan due to its ability to address multiple aspects of her kit simultaneously. The weapon features a high ER secondary stat, which is excellent for ensuring Iansan maintains consistent Elemental Burst uptime. Additionally, its passive effect converts a portion of Iansan’s Energy Recharge into ATK, directly boosting her total ATK, which allows her to not lose out on ATK while building ER instead through her artifacts while giving even more ER for a 12s helping even further with her Elemental Burst up time and smooth rotation.This combination of high ER and ATK scaling makes the Engulfing Lightning perfectly suited to support Iansan’s kit.
1Calamity Queller
TheCalamity Quelleris the best-in-slot weapon for Iansan, providing unmatched synergy with her mechanics as a support character. Originallydesigned for Shenhe, this polearm features the highest ATK among all polearms, making it ideal for characters like Iansan whose Elemental Burst buffs scale with total ATK. Additionally, its secondary stat provides even more ATK, further contributing to achieving the ATK thresholds required to maximize her buffs. The passive effect increases her ATK for a duration after using an Elemental Skill which is doubled when Iansan is off-field, which makes this weapon highly convenient for very high ATK, letting players focus on other ideal stats for artifacts.
It’s important to note that players will need to prioritize Energy Recharge (ER) for Iansan through her artifacts whenever possible, especially for teams that lack strong energy generation or if Iansan’sC1is unavailable. As the Calamity Queller does not offer any ER, meeting Iansan’s energy needs will rely heavily on ER-focused main stats or sub-stats from her artifact set. This can mean prioritizing ER Sands over ATK Sands in certain builds to ensure she maintains consistent Elemental Burst uptime.
