What's the criteria to imbue boots with Powerful Swiftness?

Question

Recently I tried to imbue some boots with Powerful Swiftness imbuement and I was surprised that many boots aren't available for this imbuement.

I understand that boots that already have speed bonus can't be imbued but I also tried to imbue Guardian Boots which they don't have speed bonus and I also couldn't imbue it.

So... What's the criteria for a pair of boots to be available to imbue with Swiftness?

Answer 1

The first criteria as you mentioned is the atributes of the item. You can't imbue with Speed any item that has Speed in their atributes, no matter if its increase or decrease your Speed.

I've been testing the other criteria and here is my tests:

All boots with NO required level and of course no Speed as an atribute can be imbued with Powerful Swiftness. For example:

• Leather Boots 
• Coconout Shoes  
• Pirate boots  
• Golden Boots 
• Steel Boots 

And then we have all these boots with Required Level that gives NO Speed but still cannot be imbued with Powerful Swiftness. For example: 

• Magma Boots (Lvl 35)  
• Glacier Shoes (Lvl 35) 
• Lightning Boots (Lvl 35) 
• Terra Boots (Lvl 35) 
• Guardian Boots (Lvl 70) 

Then we jump to those boots with required level that gives NO Speed but CAN BE IMBUED with Powerful Swiftness. For example: 

• Pair of Nightmare Boots (Lvl 140)  
• Makeshift Boots (Lvl 150) 
• Pair of Dreamwalkers Boots (Lvl 180) 
• Mutant Bone Boots (Lvl 250)  

Item BiS are an exception:

For example:

Pair of Soulwakers : It gives you +15 speed but can be imbue with Powerful Swiftness. But this is not weird, remember that Soultainter (Sorcerers wand) gives 10% Critical and still can be imbue with Strike. 

In conclusion: 

The criteria to imbue with Powerful Swiftness are:

• Boots with no required level. 
• Boots that gives no speed and with required level 140 or higher. (Currently -27.Mar-2023- there are no boots with required level between 70 and 140 with an empty slot, that's why I say 140 or higher. 

Comments

great answer! thank you so much, just to add some days ago I discovered that Frostflower Boots also can be imbued. Thank you for answering.

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Yes, it can be imbued because it follows this criteria. :) Thank you too.

Answer 2

The ability to apply this imbuement can be obtained by defeating Lloyd during the Forgotten Knowledge Quest.

Comments

Don't think that what he meant in his question
he didn't ask how to unlock the imbuement he asks why so many boots even without speed bonus cant be imbue with Powerful Swiftness

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Edit: Ahh I see what you mean, didn't think about it this way!

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is there still no answer to this?