Wizards Unite Hub continues to partner with Plotter101 to create detailed Adversaries guides. Up next is Sytherin’s Basilisk and its guards — a Formidable Serpent and a Fierce Acromantula. This Adversary has already been featured twice during Harry Potter: Wizards Unite events.
Slytherin’s Basilisk in Wizards Unite
Slytherin’s Basilisk is the 4th Adversary in the Challenges Registry of Feared Adversaries. Going down the list, each Adversary is more difficult. Thankfully, it is safe for players to take on the Basilisk in Wizards Unite with our eyes open!
On the Basilisk’s Registry page, players need to place 1 Adversary and 4 Artefacts to prestige the page. These are:
- Slytherin’s Basilisk
- Basilisk Skin
- Basilisk Eye
- Basilisk Egg
- Basilisk Fang
To earn the Basilisk Fragments and Artefact Fragments, you need to defeat the Guards and the Basilisk itself. These are:
- Formidable Serpent
- Fierce Acromantula
- Slytherin’s Basilisk
For each Guard you defeat, you earn 1 Artefact Fragment. When you defeat the Basilisk, you earn 1 Slytherin’s Basilisk Fragment and 1 Artefact Fragment.
| Foe | Stamina | Possible Artefact Fragments |
|---|---|---|
| Formidable Serpent | 486 | 1 Basilisk Skin, OR 1 Basilisk Eye, OR 1 Basilisk Egg |
| Fierce Acromantula | 1382 | 1 Basilisk Fang, OR 1 Basilisk Skin, OR 1 Basilisk Eye |
| Slytherin’s Basilisk | 2411 | 1 Slytherin’s Basilisk Fragment PLUS 1 Artefact Fragment |
How to Defeat Slytherin’s Basilisk in Wizards Unite
To defeat any Adversary, players need a combination of Spell Energy, Potions, and time. How many of these resources you use will depend on your Profession, your Profession’s Lesson Plan, and your Profession’s Advanced Adversarial Combat. The more you complete in your skill trees, the less resources you will need to defeat Adversaries.
If you have completed more than one Profession’s Lesson Plan, you should play as a Magizoologist to defeat Slytherin’s Basilisk. That said, you will not know the type of Adversary until you enter the Adversary Encounter. Once you start the Adversary Encounter, there is not a way to change your Profession. Some players have successfully used a second device to change Profession, but this can cause a glitch that kicks you out of the Adversary Encounter, so do this at your own risk.
When Slytherin’s Basilisk is a boosted Adversary like during an event, you should play as an Magizoologist for the extra advantage. To reiterate, this advice is only true if you are equally strong in more than one Profession.
Damage Dealt by Slytherin’s Basilisk and Guards
When trying to defeat Slytherin’s Basilisk’s Adversary chain, you will lose health points (HP) whenever the Foe hits you (at times you might be lucky to Dodge!). The chart below outlines how much stamina you will lose, depending on your Profession.
| Foe | Professor | Magizoologist | Auror >50% | Auror <50% |
|---|---|---|---|---|
| Formidable Serpent | 11 | 8 | 16 | 14 |
| Fierce Acromantula | 25 | 12 | 38 | 34 |
| Slytherin’s Basilisk | 39 | 29 | 61 | 54 |
Resources Needed to Defeat Slytherin’s Basilisk
Plotter101 put together the following chart to help players prioritize their resources when completing the Slytherin’s Basilisk’s Adversary chain.
Accessibility note: If you are using a screen reader, the following text explains this chart about the Basilisk’s chain.
Aurors will need to use 2 Spell Energy and 0 Potions to defeat the Formidable Serpent; 7 Spell Energy and 0 Potions to defeat the Fierce Acromantula; 6 Spell Energy and 1 Strong Exstimulo Potion OR 15 Spell Energy and 1 Healing Potion to defeat Slytherin’s Basilisk.
Magizoologists will need to use 2 Spell Energy and 0 Potions to defeat the Formidable Serpent; 6 Spell Energy and 0 Potions to defeat the Fierce Acromantula; 11 Spell Energy and 1 Strong Exstimulo Potion OR 19 Spell Energy and 1 Healing Potion to defeat Slytherin’s Basilisk.
Professors will need to use 4 Spell Energy and 0 Potions to defeat the Formidable Serpent; 11 Spell Energy and 0 Potions to defeat the Fierce Acromantula; 14 Spell Energy and 1 Strong Exstimulo Potion OR 22 Spell Energy and 1 Healing Potion to defeat Slytherin’s Basilisk.
These recommendations assume that players have completed 10/15 nodes in Advanced Adversarial Combat. These recommendations also assume that you have completely strengthened your Potions through SOS Training. If you have not done both of these, you will use more resources.
Personally, as a Professor with 12/15 nodes completed, I do not use any Potions against the Guards. I can defeat the Basilisk with 1 Strong Exstimulo Potion, but I add a Wit-Sharpening Potion OR I use 1 Potent Exstimulo Potion when I need to save on Spell Energy. As with any Adversary, have Healing Potions available in case bad RNG causes them to attack multiple times in a row.
How to Defeat the Fierce Acromantula by Profession
Before we can battle Slytherin’s Basilisk, we need to deal with the Fierce Acromantula who appears as the 2nd Guard in the Basilisk’s Adversary Chain.
Plotter101 put together this chart to show the different combinations of resources (Spell Energy, Potions, and time) necessary to defeat the Fierce Acromantula.
Accessibility note: If you are using a screen-reader, the following text explains this chart about the Fierce Acromantula, who is the 2nd Guard in the Basilisk chain.
How to Defeat the Fierce Acromantula as an Auror
Let’s look at the resources required by an Auror to defeat the Fierce Acromantula.
If an Auror does not use any Potions during combat, they most likely will not need to use any Healing Potions to defeat the Fierce Acromantula, and they will use 7-9+ Spell Energy. The average time needed to defeat the Fierce Acromantula will be 67.7 seconds. With this strategy, a player will win 98.99% of the time.
If an Auror uses 1 Wit-Sharpening Potion and 1 regular Exstimulo Potion during combat, they should not need any Healing Potions to defeat the Fierce Acromantula, and they will use 4-6+ Spell Energy. The average time needed to defeat the Fierce Acromantula will be 38.7 seconds. With this strategy, a player will win 99.7% of the time.
If an Auror uses 1 Strong Exstimulo Potion, they should not need any Healing Potions to defeat the Fierce Acromantula, and they will use 3-5+ Spell Energy. The average time needed to defeat the Fierce Acromantula will be 28.9 seconds. With this strategy, a player will win 99.99% of the time.
How to Defeat the Fierce Acromantula as a Professor
Let’s look at the resources required by a Professor to defeat the Fierce Acromantula.
If a Professor does not use any Potions during combat, they most likely will not need to use any Healing Potions to defeat the Fierce Acromantula, and they will use 10-14+ Spell Energy. The average time needed to defeat the Fierce Acromantula will be 105.6 seconds. With this strategy, a player will win 99.96% of the time.
If a Professor uses 1 Wit-Sharpening Potion and 1 regular Exstimulo Potion during combat, they should not need any Healing Potions to defeat the Fierce Acromantula, and they will use 6-10+ Spell Energy. The average time needed to defeat the Fierce Acromantula will be 72.7 seconds. With this strategy, a player will win 99.99% of the time.
If a Professor uses 1 Strong Exstimulo Potion, they should not need any Healing Potions to defeat the Fierce Acromantula, and they will use 4-8+ Spell Energy. The average time needed to defeat the Fierce Acromantula will be 45.6 seconds. With this strategy, a player will win 100% of the time.
How to Defeat the Fierce Acromantula as a Magizoologist
Let’s look at the resources required by a Magizoologist to defeat the Fierce Acromantula.
If a Magizoologist does not use any Potions during combat, they should not need any Healing Potions to defeat the Fierce Acromantula, and they will use 5-8+ Spell Energy. The average time needed to defeat the Fierce Acromantula will be 55.1 seconds. With this strategy, a player will win 100% of the time.
If a Magizoologist uses 1 Wit-Sharpening Potion and 1 regular Exstimulo Potion during combat, they should not need any Healing Potions to defeat the Fierce Acromantula, and they will use 3-6+ Spell Energy. The average time needed to defeat the Fierce Acromantula will be 32.5 seconds. With this strategy, a player will win 100% of the time.
If a Magizoologist uses 1 Strong Exstimulo Potion, they should not need any Healing Potions to defeat the Fierce Acromantula, and they will use 2-4+ Spell Energy. The average time needed to defeat the Fierce Acromantula will be 21 seconds. With this strategy, a player will win 100% of the time.
How to Defeat Slytherin’s Basilisk by Profession
These charts will again assume that players have completed 10/15 nodes in Advanced Adversarial Combat, and they have strengthened their Potions. If you have not done this, you can calculate whether or not you need Potions by using this spreadsheet with data compiled by Plotter101 and his Discord. You will need to make a copy in your own Google Drive in order to update the player stats on the Summary page.
How to Defeat the Slytherin’s Basilisk as an Auror
Plotter101 put together this chart to show Aurors the different combination of resources (Spell Energy, Potions, and time) necessary to defeat Slytherin’s Basilisk.
Accessibility note: If you are using a screen reader, the following text explains this chart about Slytherin’s Basilisk.
If an Auror does not use any Potions to deal greater damage, they will need 2-4 Healing Potions to defeat Slytherin’s Basilisk, and they will use 13-16+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 119.6 seconds. With this strategy, a player will win only 3% of the time, so don’t do this!
If an Auror uses 1 Wit-Sharpening Potion, they will need 1-3 Healing Potions to defeat Slytherin’s Basilisk, and they will use 10-13+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 91.1 seconds. With this strategy, a player will win 22% of the time, so don’t do this!
If an Auror uses 1 regular Exstimulo Potion, they will need 1-3 Healing Potions to defeat Slytherin’s Basilisk, and they will use 10-13+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 91.3 seconds. With this strategy, a player will win 22.21% of the time, so don’t do this!
If an Auror uses 1 Strong Exstimulo Potion, they might need 1 Healing Potion to defeat Slytherin’s Basilisk, and they will use 5-9+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 52.7 seconds. With this strategy, a player will win 79.77% of the time. This is the strategy Plotter101 recommends to conserve resources.
If an Auror uses 1 Potent Exstimulo Potion, they should not need any Healing Potions, and they will use 4-6+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 34.7 seconds. With this strategy, a player will win 97.6% of the time. If you have Potent Exstimulo Potions to spare, this approach will save you time and Spell Energy.
If an Auror uses 1 regular Exstimulo Potion AND 1 Wit-Sharpening Potion, they might need 1 Healing Potion to defeat Slytherin’s Basilisk, and they will use 7-10+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 65.3 seconds. With this strategy, a player will win 64.42% of the time.
If an Auror uses 1 Strong Exstimulo Potion AND 1 Wit-Sharpening Potion, they should not need any Healing Potions, and they will use 4-6+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 37.4 seconds. With this strategy, a player will win 96% of the time. This is another good option to save time and Spell Energy.
If an Auror uses 1 Potent Exstimulo Potion AND 1 Wit-Sharpening Potion, they should not need any Healing Potions, and they will use 3-5+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 27.3 seconds. With this strategy, a player will win 99.18% of the time.
How to Defeat Slytherin’s Basilisk as a Magizoologist
Plotter101 put together this chart to show Magizoologists the different combination of resources (Spell Energy, Potions, and time) necessary to defeat Slytherin’s Basilisk. As a reminder, if you have maxed out more than one profession, you will be most successful if you face the Basilisk chain as a Magizoologist.
Accessibility note: If you are using a screen reader, the following text explains this chart about Slytherin’s Basilisk.
If a Magizoologist does not use any Potions to deal greater damage, they might need 1 Healing Potion to defeat Slytherin’s Basilisk, and they will use 16-20+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 155 seconds. With this strategy, a player will win only 96.5% of the time. If you have the Spell Energy (and patience) available, this approach is likely to be successful.
If a Magizoologist uses 1 Wit-Sharpening Potion, they should not need any Healing Potions, and they will use 13-17+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 130.5 seconds. With this strategy, a player will win 99.53% of the time.
If a Magizoologist uses 1 regular Exstimulo Potion, they should not need any Healing Potions, and they will use 13-17+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 131 seconds. With this strategy, a player will win 99.4% of the time.
If a Magizoologist uses 1 Strong Exstimulo Potion, they should not need any Healing Potions, and they will use 8-12+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 92.5 seconds. With this strategy, a player will win 99.98% of the time. This is the strategy Plotter101 recommends to conserve resources overall.
If a Magizoologist uses 1 Potent Exstimulo Potion, they should not need any Healing Potions, and they will use 5-7+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 45.9 seconds. With this strategy, a player will win 100% of the time.
If a Magizoologist uses 1 regular Exstimulo Potion AND 1 Wit-Sharpening Potion, they should not need any Healing Potions, and they will use 10-14+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 105.1 seconds. With this strategy, a player will win 99.95% of the time.
If a Magizoologist uses 1 Strong Exstimulo Potion AND 1 Wit-Sharpening Potion, they should not need any Healing Potions, and they will use 5-10+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 66.1 seconds. With this strategy, a player will win 99.98% of the time.
If a Magizoologist uses 1 Potent Exstimulo Potion AND 1 Wit-Sharpening Potion, they should not need any Healing Potions, and they will use 4-8+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 40 seconds. With this strategy, a player will win 100% of the time.
How to Defeat Slytherin’s Basilisk as a Professor
Plotter101 put together this chart to show Professors the different combination of resources (Spell Energy, Potions, and time) necessary to defeat Slytherin’s Basilisk.
Accessibility note: If you are using a screen reader, the following text explains this chart about Slytherin’s Basilisk.
If a Professor does not use any Potions to deal greater damage, they will need 1-3 Healing Potions to defeat Slytherin’s Basilisk, and they will use 19-23+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 182 seconds. With this strategy, a player will win only 4% of the time, so don’t do this!
If a Professor uses 1 Wit-Sharpening Potion, they will need 1-3 Healing Potions to defeat Slytherin’s Basilisk, and they will use 16-20+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 157.5 seconds. With this strategy, a player will win only 14.8% of the time, so don’t do this!
If a Professor uses 1 regular Exstimulo Potion, they will need 1-3 Healing Potions to defeat Slytherin’s Basilisk, and they will use 16-20+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 157.6 seconds. With this strategy, a player will win only 14.96% of the time, so don’t do this!
If a Professor uses 1 Strong Exstimulo Potion, they will need 1-2 Healing Potions to defeat Slytherin’s Basilisk, and they will use 11-15+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 119.6 seconds. With this strategy, a player will win 54.97% of the time. This is quite risky.
If a Professor uses 1 Potent Exstimulo Potion, they might not need any Healing Potions, and they will use 6-9+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 59.9 seconds. With this strategy, a player will win 98.12% of the time. If you have Potent Exstimulo Potions to spare, this is a good approach to take.
If a Professor uses 1 regular Exstimulo Potion AND 1 Wit-Sharpening Potion, they will need 1-2 Healing Potions to defeat Slytherin’s Basilisk, and they will use 13-17+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 130.5 seconds. With this strategy, a player will win 41.29% of the time. This is quite risky.
If a Professor uses 1 Strong Exstimulo Potion AND 1 Wit-Sharpening Potion, they might not need any Healing Potions, and they will use 8-12+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 92.6 seconds. With this strategy, a player will win 84% of the time. This is the strategy Plotter101 recommends to conserve resources.
If a Professor uses 1 Potent Exstimulo Potion AND 1 Wit-Sharpening Potion, they should not need any Healing Potions, and they will use 5-9+ Spell Energy. The average time needed to defeat Slytherin’s Basilisk will be 46.9 seconds. With this strategy, a player will win 99.68% of the time.
Final Thoughts on the Adversary
Like all Adversaries you encounter in Wizards Unite, you may not want to take on Slytherin’s Basilisk each time you have the opportunity. Especially if you’re a newer player, or a casual player, there is nothing wrong with only collecting Artefact Fragments by defeating the Guards. Then you can back out from the Adversary Encounter to save on Potions and Spell Energy. You will have a better chance at defeating the Basilisk than the dragons we have had to deal with recently, however.
As with any Adversary, be prepared to use a Healing Potion if you fall below 40% on your HP meter. Remember that you can push the Potion button while Slytherin’s Basilisk is still dealing with your spell cast. That way you will not miss the opportunity to heal yourself in case it attacks several times in a row.
As already stated in every single Adversaries guide, prioritize finishing one Profession’s Lesson Plan. All Professions have strengths and weaknesses, so consider your overall game strategy as a player, beyond Adversaries alone.
What do you think about Slytherin’s Basilisk? Have you had much success defeating it already? What other advice would you offer players of different levels?
Big thanks to Plotter101 and his Discord for compiling this data.
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Adversaries are not that hard, but sure consume a lot of resources