Oh my stars and garters! When HoYoVerse dropped Iansan in Genshin Impact version 5.5, I was practically vibrating with excitement—like a kid on Christmas morning who just discovered unlimited primogems! 😱 As a dedicated support main, I knew that unleashing her full potential wasn't just about artifacts; it was all about that perfect polearm. Imagine this: one swing and her Elemental Burst turns your team into unstoppable gods, but without the right weapon? Total disaster, folks! I've spent sleepless nights grinding and testing every option, and let me spill the tea: getting her ATK and Energy Recharge (ER) dialed in is like finding the holy grail of Teyvat. With stats needing around 150-200% ER and 2500–3000 ATK at higher constellations, it's a wild ride. But oh boy, the thrill of seeing those buffs scale? Pure adrenaline! 
Now, let's dive into the Skyward Spine. Seriously, this beast made me feel invincible—like I could solo a weekly boss with one hand tied behind my back! 💥 With its whopping 674 Base ATK and 36.8% ER, it's a solid pick for starters. But hold up, the passive with that crit rate boost and attack speed? Meh, it kinda fell flat for me in real fights. I remember one chaotic battle where the vacuum blade triggered randomly, and I was like, "Is this even helping?" Still, as a non-premium 5-star, it's a lifesaver when you're low on wishes. Just don't expect miracles, or you'll end up disappointed. 
Next up, the Favonius Lance—wowza, this one is a game-changer for us F2P warriors! It's like the Swiss Army knife of polearms, and I swear, it saved my sanity in co-op domains. With 565 Base ATK and 30.6% ER, plus that R5 effect generating particles galore, it turned my energy-starved team into a well-oiled machine. But here's the catch: you need crit rate to make it work. I had to swap to a crit circlet, and at first, I panicked about losing ATK. Then I slapped on some ATK sands, and bam! Problem solved. In teams with double Electro or C1 Iansan, it's even smoother. Honestly, this lance feels like a warm hug from Barbatos himself. Why not give it a whirl? 
Ah, the Tamayuratei No Ohanashi—this beauty stole my heart faster than Paimon devours sweet madames! 🌟 As an event weapon from version 5.4's Enchanted Tales, it's totally free, and man, does it shine. Same 565 Base ATK and 30.6% ER as Favonius, but that R5 passive? A juicy 40% ATK boost after her skill! I used it in a Spiral Abyss run, and with C5 Iansan, hitting that 3000 ATK cap felt like winning the lottery. Plus, the movement speed? Zipping around enemies was pure bliss. If you're chasing max buffs without relying on team energy, this is your golden ticket. It's wild how a F2P option can outshine some 5-stars.
But let's not forget the Engulfing Lightning—holy electro archon, this weapon is pure fire! 🔥 When I first equipped it, I felt like Raiden Shogun herself had blessed me. With 608 Base ATK and 55.1% ER, plus the passive converting ER to ATK, it's like having your cake and eating it too. In my tests, Burst uptime was flawless, and the extra energy regen made rotations smoother than silk. Seriously, it solves all Iansan's problems in one go. Why settle for less when this exists?
Finally, the Calamity Queller—this is the crown jewel, the ultimate weapon that made me scream "Eureka!" 🌈 With 741 Base ATK (highest ever!) and 16.5% ATK secondary, it's tailor-made for her. The passive? Off-field ATK doubling? Insane! I paired it with ER sands, and the buffs were off the charts. But here's the rub: no built-in ER means artifact farming is brutal. In one intense session, I almost rage-quit before hitting the stats. Still, it's worth the grind. 
To wrap this up, I've put together a quick comparison table based on my epic fails and triumphs. It's not exhaustive, but it highlights the key vibes:
| Weapon | Base ATK | Secondary Stat | My Personal Rating |
|---|---|---|---|
| Skyward Spine | 674 | 36.8% ER | ⭐⭐⭐ (Solid but passive is meh) |
| Favonius Lance | 565 | 30.6% ER | ⭐⭐⭐⭐ (F2P hero!) |
| Tamayuratei | 565 | 30.6% ER | ⭐⭐⭐⭐⭐ (ATK boost FTW) |
| Engulfing Lightning | 608 | 55.1% ER | ⭐⭐⭐⭐⭐ (Perfect synergy) |
| Calamity Queller | 741 | 16.5% ATK | ⭐⭐⭐⭐⭐⭐ (BIS, but ER grind) |
So, after all this craziness, I'm left wondering: what's your weapon of choice? With options ranging from accessible to god-tier, the journey is yours to define. Maybe it's time to experiment and share your own tales! 🎮✨