In The Elder Scrolls IV: Oblivion Remastered, Will-o-the-Wisps are among the most elusive and frustrating enemies you’ll face. These glowing, ghost-like figures float through the swamps and old ruins of Cyrodiil, often catching unsuspecting players by surprise. Their powers are deceivingly strong for their size — they can absorb both health and magicka while remaining nearly invisible. To make matters worse, most weapons and spells won’t affect them unless you come prepared. But don’t worry — once you understand how they behave and what counters them, you’ll be able to deal with them efficiently.

Will-o-the-Wisps are ethereal beings. They glide silently through the world, barely visible at times, often just a shimmer in the air. When in combat, they use two main spells. One is a burst-type spell that absorbs health and magicka instantly. The second is more drawn out — it saps your health and magicka over time while also weakening your intelligence and willpower. This combination makes them surprisingly dangerous, especially if you’re a mage or heavily reliant on magic.
To make things worse, they are immune to a long list of effects. Normal weapons? Useless. Poisons? Won’t work. Disease? Doesn’t affect them. They can’t be paralyzed or silenced either. In short, they’re built to frustrate players who go into battle unprepared. But they’re not invincible. You just need to fight smarter.
What to Bring Before You Fight
Preparation makes all the difference. You won’t want to stumble into a fight with one of these things with nothing but your base weapon.
First, use enchanted weapons. Better yet, silver weapons or Daedric ones. Anything with a magical property will hurt them. If you’re carrying a basic steel sword, it’s time for an upgrade.
Second, destruction spells — particularly those that deal fire damage — are a great tool. Fire is highly effective, and ranged spells help keep you out of their deadly touch range.
Third, you’ll need a way to keep track of them. They become nearly invisible in combat, and that’s a big problem. Abilities or items that detect life will help you follow their movements.
Lastly, gear that reflects spells can actually turn their greatest strength into a weakness. If you reflect their health or magicka absorption back onto them, it can restore you instead.
Strategies That Work
Fighting from a Distance
Keep them at arm’s length, or better yet, several feet away. They rely on close-range spells, so distance is your best defense. Use bows that are enchanted or carry elemental damage. Combine this with fire-based destruction spells and stay mobile. Don’t stand still — keep moving and shooting.
Close-Quarters Combat
If you prefer melee, make sure your weapon is enchanted or silver. Strike quickly when they become visible, and try to back away between hits. Blocking may help a little, but you’ll still take magical damage. Staying in close quarters too long drains your resources fast, so hit hard and retreat when needed.
Exploiting Their Weaknesses
Believe it or not, they do have weaknesses. For one, their shimmering body still causes ripples in water. If you fight them in a swamp or lake, you can use these ripples to spot them even when they vanish.
Another trick is using spell reflection. With the right gear, their health-absorbing spells can bounce back onto them, healing you instead of hurting you.
There’s also a little-known method using hand-to-hand combat. If you’ve trained your skill up to the Journeyman level, your punches will be able to damage them. It’s risky, but it’s a last resort if you find yourself unequipped.
Why It’s Worth It
Taking down a Will-o-the-Wisp isn’t just satisfying — it’s profitable. Each one drops Glow Dust, a rare ingredient used in several important potions and quests. It’s a key item for progressing in the Mages Guild and other questlines.
On top of that, their souls can be trapped in soul gems. These souls are valuable and can be used for enchanting gear or recharging your magical weapons. It’s a fair trade for the trouble they cause.
The Bigger Picture
Fighting Will-o-the-Wisps teaches an important lesson in Oblivion: not every enemy can be beaten with brute force. Some require a careful approach, a smart use of resources, and a willingness to adapt. Whether you’re wandering the swampy regions near Bravil or diving into Ayleid ruins, you’ll encounter these glowing pests from time to time. And now, you’ll know exactly how to handle them.
Don’t rush in without a plan. Gear up, keep your distance, and exploit their weaknesses. Soon enough, what once felt like an unbeatable ghost will become just another foe in your path.