Barty Crouch Jr. Lethal Adversaries Event

Lethal Adversaries Event artwork featuring Barty Crouch Jr.

The inaugural Lethal Adversaries Event in Harry Potter: Wizards Unite will be November 5-8, 2021, featuring Barty Crouch Jr.

Adversaries resembling notorious Death Eater Barty Crouch Jr. herald a new class of even more powerful and deadly Adversaries. Why are The Unforgivable unleashing some of the wizarding world’s most dangerous wizards and witches upon the world, and how can they be stopped?


In this Lethal Adversaries guide, discover all of the event features, tasks, rewards, and strategic tips.

Note: Thank you Niantic and WB Games for providing Wizards Unite Hub with early information so we can create Wizards Unite guides.

Event Name Barty Crouch Jr. Lethal Adversaries Event
Date + Time

  • Starts on November 5, 2021 at 11:00 a.m. PT
  • Ends on November 8, 2021 at 11:00 a.m. PT

  • A special assignment with rewards
  • Premiere of Lethal Adversary Barty Crouch Jr.
  • The following Foundable will be boosted on the Map and when using Tonic for Trace Detection:
    • -Mad-Eye Moody’s Eye
  • Master Notes will reduce brewing time by 25% for all Exstimulo Potions and Wit-Sharpening Potion
  • Guaranteed Exploration Foundable Fragments from Forest Chamber IV
  • Increased Wizarding XP and Challenge XP from doing Wizarding Challenges, plus Spell Energy rewards
  • Free store pack

  • Defense Against the Dark Arts Books
  • Spell Energy
  • Gold
  • And more!!!

Adversaries Event Tasks and Rewards

The debut Lethal Adversaries Event differs slightly from past Adversaries Events. Players have 2 regular sets of tasks to complete, plus a Bonus Assignment.

Rewards for all Wizards Unite events will be generous between now and the game’s end on January 31, 2022.

If you are seeing plenty of Adversaries on the Map, wait until you’ve completed all other tasks before you use the Edible Dark Mark. Then it will apply to the 2nd quest.

Quest Step Reward
Use 1 Edible Dark Mark 20 Gold
Cast 3 Maxima Attacks 2 Wit-Sharpening Potions
Use 6 Potions in Adversary Encounters 1 Silver Key
Return 8 Fragments from Barty Crouch Jr. Chains 1 Potent Exstimulo Potion

Overall rewards: 

  • 3 Defense Against the Dark Arts Books
  • 500 Wizarding XP
  • 100 Gold
  • 30 Spell Energy

After your Edible Dark Mark expires, use a Tonic for Trace Detection to find Mad-Eye Moody’s Eye Traces.

Quest Step Reward
Return 6 Mad-Eye Moody’s Eye Foundables 2 Strong Exstimulo Potions
Earn 1500 Challenge XP Through Wizarding Challenges and/or Adversary Chains 40 Gold
Deal 8500 Damage Using Maxima Attacks 3 Healing Potions
Defeat Barty Crouch Jr. 2 Times 2 Potent Exstimulo Potions

Overall rewards:

  • 3 Defense Against the Dark Arts Books
  • 500 Wizarding XP
  • 125 Gold
  • 30 Spell Energy

Adversaries Event BONUS Tasks and Rewards

This Adversaries Event includes a Bonus Assignment! Since we do not know anything about Barty Crouch Jr.’s health, or how often you can cast Maxima, we don’t know how difficult these tasks will be.

Quest Step Reward
Deal 20,000 Damage to Adversaries 2 Spell Books
Cast 10 Maxima Attacks 2 Spell Books
Return 1 Barty Crouch Jr.’s Wand Fragment 2 Spell Books
Return 1 Flask of Polyjuice Potion Fragment 2 Spell Books

Overall rewards:

  • 5 Defense Against the Dark Arts Books
  • 1000 Wizarding XP
  • 150 Gold
  • 30 Spell Energy

How to Prepare for the Lethal Adversaries Event

This is the first Lethal Adversaries Event, so we’re going in a little blind. However, I can still offer some general advice.

At this point, if you haven’t completed an entire Profession Lesson Plan, I would plan on backing out before Barty Crouch Jr. arrives. Even the Guards will be difficult, but you can manage them with Potions.

For everyone else, work on your Advanced Adversarial Combat. It’s possible the initial 10 nodes against Feared Adversaries will also apply for Lethal Adversaries. Plus, you have to unlock those nodes anyway to start working on the nodes for Lethal Adversaries.

Strengthen your Potions through SOS Training. Brew the following Potions:

  • Exstimulo Potions
  • Wit-Sharpening Potions
  • Healing Potions
  • Tonics for Trace Detection (not as critical)

Also collect extra Ingredients for Exstimulo Potions and Wit-Sharpening Potions. The brewing time will be reduced with Master Notes during the event.

Max out your Spell Energy. Right now, Spell Energy on the Map is extremely generous, so this should be easy to do.

This SOS Training chart indicates the different nodes and their locations to improve your Potions. Note the inclusion of nodes to improve Tonic for Trace Detection.

Location Node Effect
CE I,5 Engarde! Exstimulo Potion Potency Increase
CE I,9 Brunch or Linner? Exstimulo Potion Potency Increase
CE II,22 Was Mundungus Here? Exstimulo Potion Potency Increase
CE I,12 Awesome Blossom Exstimulo Potion Duration Increase
CE I,8 Twisting Spleens Healing Potion Potency Increase
CE I,9 Name in the Paper! Healing Potion Potency Increase
CE II,15 Muggle Medicines Healing Potion Potency Increase
CE I,8 Hand in Hand Strong Exstimulo Potion Potency Increase
CE II,17 St. Mungos Strong Exstimulo Potion Potency Increase
CE II,28 Ebb and Neap Strong Exstimulo Potion Potency Increase
CE I,20 Ice Cream Social Strong Exstimulo Potion Duration Increase
CE I,12 Volunteer Work Potent Exstimulo Potion Potency Increase
CE II,32 Light My Fire Potent Exstimulo Potion Potency Increase
CE III,38 Tempermental Cauldrons Potent Exstimulo Potion Potency Increase
CE III,42 Wasted on the Old Potent Exstimulo Potion Duration Increase
CE II,22 Whetstone for the Mind Wit-Sharpening Potion Potency Increase
CE II,32 Recipe Recitation Wit-Sharpening Potion Potency Increase
CE II,40 I’ll Be the Knight Wit-Sharpening Potion Potency Increase
CE II,32 Wit Beyond Leisure Wit-Sharpening Potion Duration Increase
CE I,7 Stir Crazy Increases Traces revealed by Tonic for Trace Detection
CE II,25 Concentrated Concoction Increases Traces revealed by Tonic for Trace Detection
CE III,38 Trained For This Increases Traces revealed by Tonic for Trace Detection

Tips to Enjoy the Lethal Adversaries Event

Honestly, this section is difficult to fill out, for 2 reasons. 1) Wizards Unite is ending, so even a fun event is bittersweet. 2) This is our first Lethal Adversaries Event, so I don’t know the math to break down specific advice.

If you have not progressed much with Advanced Adversarial Combat, you might want to focus on the Feared Adversaries. You can still enter Barty Crouch Jr. Encounters, but consider backing out after 1-3 Guards. Otherwise, you will need to use a lot of Potions.

If you don’t need anymore Defense Against the Dark Arts Books, and you’ve already prestiged all of your Feared Adversaries, you can focus just on Barty Crouch Jr. The Dark Mark on the Map will look different between a Feared Adversary and a Lethal Adversary.

Of course, if you still need specific Feared Adversaries to prestige, you can enter an Adversary Encounter to see who it is. If you still don’t need additional DADA Books, you can back out of any Adversary you’ve already green-starred on a gold frame.

Finally, while we don’t know the exact difficulty of Barty Crouch Jr. yet, we do know he will be a greater challenge than Narcissa Malfoy. Stack a Potent Exstimulo Potion with a Wit-Sharpening Potion immediately. Restock as necessary. Keep an eye on your health bar (this is easier with the new update since low health is indicated with red around your screen), and drink Healing Potions with abundant caution.

Adversaries Event Bundles

Like all Wizards Unite events, this Adversaries Event will feature store bundles. The free store pack includes an Edible Dark Mark! Both paid bundles are repeats from past events.

Free store pack includes:

  • 1 Dark Detector
  • 1 Edible Dark Mark
  • 2 Healing Potions
  • 1 Exstimulo Potion
  • 30 Spell Energy

The Arresto Adversary Bundle (800 Gold) includes:

  • 3 Edible Dark Marks
  • 125 Spell Energy

Is this bundle a good deal?

You can buy 5 Edible Dark Marks for 1200 Gold, making the individual value 240 Gold. Thus the value of 3 Edible Dark Marks is 720 Gold. Unless, you need discounted Spell Energy, this bundle is not good value for EDMs.

The Adversary Vanquisher Trunk (2020 Gold) includes:

  • 3 Edible Dark Marks
  • 125 Spell Energy
  • 8 Potent Exstimulo Potions
  • 8 Wit-Sharpening Potions
  • 8 Strong Exstimulo Potions

3 Edible Dark Marks are worth 720 Gold.

A single Potent Exstimulo Potion in Diagon Alley costs 75 Gold. However, if you have all of the common Ingredients, it’s a better deal to buy 1 Unicorn Hair for 30 Gold, use Master Notes in the Cauldron, and then collect the Potion immediately for 41 Gold. So let’s put the value of Potent Exstimulo Potions at 71 Gold.

Thus 8 Potent Potions are worth 568 Gold.

Normally we don’t recommend spending Gold on Strong Exstimulo Potions because their Ingredients are common. However, with frequent Wizards Unite events, players are going through their Potions quickly.

Looking at just Ingredients, it’s 3 Gold each per Snowdrop, Bitterroot, and Re’em Blood, plus 12 Gold for Abraxan Hair, so 36 Gold per Strong Exstimulo Potion.

Thus 8 Strong Potions are worth 288 Gold.

I really don’t recommend spending Gold on Wit-Sharpening Potions because Ingredients will be boosted during the event, AND you can get these Potions through Gifts.

Before Spell Energy, the bundle is really not worth the price asked. I only recommend this bundle for rural players who don’t have access to Ingredients or Spell Energy. And now, with Unicorn Hair available on the Map, and boosted Spell Energy, the bundle really isn’t a good deal.

Final Thoughts

What do you think of this event? Are you excited to fight Barty Crouch Jr.? Join the conversation on Discord or social media!

If you’d like to support the work of Wizards Unite Hub, join our Patreon or shop our merch store.

You can also support me directly on Kofi, which helps cover my tea-drinking habit.

5 1 vote
Article Rating
Notify of
Newest Most Voted
Inline Feedbacks
View all comments
David George Johnson
David George Johnson(@davidgeorgejohnson)
27 days ago

I am SOOO sad and upset this game is ending!
I’ve been playing this game for a few years now to get ready for strong events like this.
Glad you said you don’t recommend spending coins on potions!

Margaret Priver
Margaret Priver(@margaretpriver)
27 days ago

Brita, thanks for all your comprehensive tips!

Jillian Ratliff
Jillian Ratliff(@jillianratliff)
27 days ago

I just got my first Barty Crouch Jr encounter but got kicked out on the second guard. The first one was about as tough as the dragons so I don’t know if I’ll be able to beat Barty! I will sure try. I guess we only have three months to prestige these pages! I’m really sad about the end of the game. I’ve worked really hard on it.

27 days ago

Nice for the change. So far, finished all tasks in group one, but the fragments. Spent two EDMs and just got regular ones. Then a lethal showed up after the EDMs were done. Finished the first one, network error on the second. Got back to the second one and it disappeared. So only one fragment done.

For these events, finishing the event is secondary to getting the DADA books…. for me. Still the errors and RNG are annoying.

Last edited 27 days ago by Fidonet
Chris van Buijten
Chris van Buijten(@chrisvanbuijten)
27 days ago

Hi Brita, thanks for your clear guides and also sad that HPWU is stopping in januari. But is this event is a sign we go out with a big bang. Had lethal adversary but with potions to do. Big coin rewards for each adversary stage (100 gold and more). So investing in vault extensions for potions is easier. (Or silver keys).
Wanted to stop after the latest news from Niantic, but I decided after the start of this event to continue until HPWU stops.
Brite thanks again.

Chris van Buijten
Chris van Buijten(@chrisvanbuijten)
27 days ago

Just started quest step 2.
the lethal adversary chain crashed two times in a row. Each time at the moment after a sub task was completed (earn 1500 challenge xp / deal 8500 damage with maxima attacks). Grrr.. try tomorrow conpleting defeat 2x barty crough. 🙁

Chris van Buijten
Chris van Buijten(@chrisvanbuijten)
25 days ago

Was able to complete all taks +bonus (which more easy then the first two tasks) in 24 hours. With 3 crashes in adversary chains. Just try to have a potion ‘enabled’ when you do a maxima spell. This does much damage to the adversary. Now replenishing potions and doing some normal adversary chains..

Juan Casanova
Juan Casanova(@juancasanova)
26 days ago

I play The game on an iPad Pro With all other apps closed. During this event I have had 2 game crashes, whilst the transition from choosing a potion, and going back to fight the Adversary. Being the last, while fighting Barth Crouch Jr. Very disappointing! Buggy…
With all the recent bad news about the game, it’s going to leave very bad memories on the all the wizards and witches that supported Wizards Unite.

Melissa Oswald
Melissa Oswald(@melissaoswald)
26 days ago

This is so much fun! I love the Maxima spell. And the rewards are crazy!

Katy Crocker
Katy Crocker(@katycrocker)
26 days ago

Omg, I really want and need a bookshop in Diagon Alley. I need spellbooks to improve my Advanced Adversarial Combat skills, but since Adversaries don’t give that much challenge xp, it is taking forever. There are spellbooks in the bonus assignment, but to get there I had to burn through a stupid amount of potions (I got mapped a few times, too, so that didn’t help either). At the same time I’m now sitting on a pretty solid amount of gold. This is crazy.

Tom Whitmore
Tom Whitmore(@tomwhitmore)
26 days ago

I too am having a problem with Crouch encounters ending abrupltly before I can deal with Pettigrew. I don’t think I’ll be able to complete the second half of the assignments even if I throw all my potions and EDMs at it.

A Geist
A Geist(@ageist)
26 days ago

Thanks for the guide! Reading others comments, I’m grateful the game has only crashed on me while collecting gifts and things, not during an adversary (yet). Lethal Adversaries are super hard, lots of potions used, but also have a massive payout. As a F2P player, 530 gold every time I complete a chain is nuts (100, 110, 120, 200). Fortunately I already had a decent stockpile of potions, but I’m almost out of ingredients for brewing more, so will have to find a chance to hunt some down the next few days. Still sad things are ending, and annoyed that… Read more »

A Geist
A Geist(@ageist)
24 days ago
Reply to  A Geist

After having done multiple lethal adversaries, I found a few tactics that worked well for me. Focus damage boosts on Maxima casts- These do something like 6-7x as much damage as a regular hit, so maximum value to have your potions active for them. Don’t die. Health potions are plentiful/fast brew. Pay attention to how much health their attacks are knocking off. Don’t let yourself sit within 2-3 hits of being knocked out. Prefer to use while your maxima bar is at least 2 from full. Strategically protego between Maxima casts to preserve potion charges and recharge Maxima. Attacking refills… Read more »

Tim Griffiths
Tim Griffiths(@timgriffiths)
25 days ago

Well this has been an epic fail. Kicked out of encounters wasted numerous spells potions and dark marks!
Reported bugs but still nothing done to improve game. Seems like they want people to stop playing and quit

cheese doodle
cheese doodle(@cheesedoodle)
25 days ago

To anyone getting kicked out to the map before they finish Barty — try this. For each adversary, cast the first Maxima that is pre-loaded, but after that, if you can wait twice as long before casting Maxima a second time, you won’t get kicked out. Maxima might look loaded and ready when it’s not. Especially if the Adversary dodges. Without going into more detail… This Maxima bug seems to affect players who aren’t as far along in their Adversary tree. I’m 12 of 15 and I don’t get kicked out, but my wife is 3 of 15 and she… Read more »

America Milonguera
America Milonguera(@americamilonguera)
23 days ago
Reply to  cheese doodle

I’m 15 of 15 and got kicked out approximately half the time, always when loading a potion. Such a waste of potions, but I was finally able to finish all the assignment by buying ALOT of potions … I still came out ahead on coins though, due to the increased rewards.

25 days ago

Finished the bonus. Didn’t really mean to. Good amount of stuff showing up, good amount of DADA books and tons of gold. Not sure how to spend it. I guess brewing potions as I’m brewing them faster than I get ingredients. Less that 20 DADA books to get the last profession lesson and I think I need it to do better. I hit them Gary with wit sharping and potent potions. Still takes a bit.

Deb Marshall
Deb Marshall(@debmarshall)
24 days ago

I’m having a terrible time with getting through the Crouch adversaries – keep getting bounced out of the game for no apparent reason. I’ve wasted 6 dark marks so far. I hope Niantic will fix this and give some back, and extend the event.