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Although she seems like just a cute elf girl, it becomes clear that Frieren is actually a legendary mage with immense power, even said to have killed the most demons in history and earned the title “Frieren the Slayer”. Enchanting fans with the fantastical viewpoint of an elf mage’s relaxed yet adventurous life, Frieren spends her extensive lifespan collecting a range of spells just as multifaceted as herself, be they frivolously niche like turning sweet grapes into sour ones or saying tongue twisters without tripping over your words, usefully mundane like scratching the itchy parts on your back or preventing eggshells from falling in when cracking eggs, or powerfully offensive spells for battle. But what are the best spells in the series (so far)?
10) A Spell for Survival
There’s a spell for finding lost accessories, a spell to keep your body warm, a spell to make clothes clean, a spell to map a dungeon, a spell to analyze treasure chests (especially for Frieren to avoid constantly being tricked by mimics), and even a spell that allows the user to find a shortcut back to a main road. There are plenty of spells mentioned or demonstrated in either the anime or manga that seem like they would be pretty useful for everyday survival and standard dungeon crawls.
But the most useful for a long, arduous journey filled with unknowns would probably be the highly underrated spell briefly mentioned by Heiter when The Hero Party became trapped in Chapter 97 that allows for survival without food, water, or oxygen for up to two months. Coupled with Ansehelschella (a spell that puts one to sleep and experiences an endless illusion of a happy dream), the combo could even perhaps make for a pleasant way to hibernate during winter.
9) Reelseiden
Being able to slash through almost anything with opponents unable to see its trajectory is what makes Übel’s Reelseiden unassuming yet one of the most dangerous spells in Frieren. While Wirbel is able to deflect Übel’s vicious attack in Episode 26 as entire trees topple, the first-class mage in Episode 20, who was an expert in defense magic and wore a specialized cloak, wasn’t even able to avoid being slashed in two.
The spell may be neither impressive nor complex and limited by five meters, but within those five meters is a space where a target may as well accept their fate. That is, if they even have time to realize they’re doomed before they’re instantly bisected. As a less gruesome and more practical application, imagine how efficient slicing, dicing, and overall prepping would become for use in the kitchen.
8) Unnamed Black Hole Spell
Frieren’s Spiegel clone created a black hole in Episode 26. Which means that Frieren herself knows a spell to create a black hole that pulls in anything and everything in its vicinity and vaporizes them. How is the literal gravity of this spell so brief and glossed over?!
Not only is a spell to create a black hole mind-blowing in itself, but since a black hole the size of a ping pong ball would have enough mass and gravitational pull to be able to destroy the planet, the prospect also implies a great deal of magical exertion to restrain such a chaotic spell.
7) Spatial Transference
While flying magic seems to be an essential and useful spell that’s used often by just about every mage, whether to attain a vantage point, more easily travel rough terrain, or circumvent obstacles, one spell that could outdo or be highly supplemental to such is teleportation magic. The spell was demonstrated by Zart in Chapter 108 when he teleported Frieren into the sky. While the idea of teleportation may seem like it’s overused or even overpowered, there’s too much potential to not include it.
After all, the spell provides such a wide variety of potential uses, both for battle and everyday practicality. Up against an intimidating opponent? Either teleport them or yourself away. Need to travel to a far-off destination, but the trip would be too treacherous, time-consuming, and expensive? Teleport there in an instant. Teleportation may be considered a fairly clichéd or unoriginal power, but there’s no denying its overarching, diverse uses and practicality.
6) Zoltraak
Zoltraak, a blast of concentrated mana, “the great killing magic of legend.” In Episode 3, Frieren explains the story of Qual, a past formidable opponent who developed such a spell, “the first piercing spell in the history of magic” that could pierce defensive spells and magic-resistant armors and absolutely obliterate the body. With such power, forty percent of the adventurers and seventy percent of the mages in the region were killed by the spell. The initial version developed by Qual was also referred to as Human Killing Magic, depicted as black in the anime.
Eventually, after Qual was sealed away, the spell was studied, and more formidable defensive spells were developed. As humans altered Zoltraak to be effective against demons and considered it the basis of humans’ modern offensive magic system, it also became referred to as Demon Killing Magic, inversely depicted as white. Although Zoltraak had eventually been rendered as an offensive spell largely considered average, Frieren admits that she thinks Fern’s Zoltraak could kill her.
