I'm not very sure about how Deleterious Alacrity of Motion works.

Its description says it grants the caster: +50% Attack Speed for 30.0 sec, -11 Endurance over 30.0 sec, +2 Move Speed for 30.0 sec.

Does it improve Recovery? I guess not, because Attack Speed and Recovery are not the same thing.

My original thought was that, after my melee wizards cast Deleterious Alacrity of Motion first and then cast Concelhaut's Parasitic Staff, their attack frequency (using the summoned staff) would drastically increase. But after I realized the spell improves Attack Speed rather than Recovery, I think my original thought was wrong.

If the spell really does not improve Recovery, I probably will not choose it for my melee wizards.

Edited yesterday at 05:48 PM1 day by IanTheWizard

19 minutes ago, IanTheWizard said:

I'm not very sure about how Deleterious Alacrity of Motion works.

Its description says it grants the caster: +50% Attack Speed for 30.0 sec, -11 Endurance over 30.0 sec, +2 Move Speed for 30.0 sec.

Does it improve Recovery? I guess not, because Attack Speed and Recovery are not the same thing.

My original thought was that, after my melee wizards cast Deleterious Alacrity of Motion first and then cast Concelhaut's Parasitic Staff, their attack frequency (using the summoned staff) would drastically increase. But after I realized the spell improves Attack Speed rather than Recovery, I think my original thought was wrong.

If the spell really does not improve Recovery, I probably will not choose it for my melee wizards.

In PoE, everything that says anything about "speed", "attack speed", "action speed" and so on only affects recovery. Deletrious Alacrity of Motion is that same. What it is actually doing: it sets recovery time to 50% or in other words: it halves your recovery time.
There is nothing that affects "action animation", "casting time", "action speed" or "action time" in PoE - except Dexterity. DEX affects those AND recovery at the same time. That's why it's even worth investing in DEX if you already have 0 recovery.

If you want to know what exactly happens with all the different "speed" bonuses and also DEX, you can use this tool which is implemented with the same algorithms as in the game:

https://naijaro.github.io/poe-speed-calculator/

PS: in Deadfire there is indeed "action speed/time" and r"ecovery time/speed" as separate stats - those can be influenced by different buffs in different ways. But not in PoE.

Edited yesterday at 06:12 PM1 day by Boeroer

8 hours ago, Boeroer said:

In PoE, everything that says anything about "speed", "attack speed", "action speed" and so on only affects recovery. Deletrious Alacrity of Motion is that same. What it is actually doing: it sets recovery time to 50% or in other words: it halves your recovery time.
There is nothing that affects "action animation", "casting time", "action speed" or "action time" in PoE - except Dexterity. DEX affects those AND recovery at the same time. That's why it's even worth investing in DEX if you already have 0 recovery.

If you want to know what exactly happens with all the different "speed" bonuses and also DEX, you can use this tool which is implemented with the same algorithms as in the game:

https://naijaro.github.io/poe-speed-calculator/

PS: in Deadfire there is indeed "action speed/time" and r"ecovery time/speed" as separate stats - those can be influenced by different buffs in different ways. But not in PoE.

Thank you for the clarification, which motivated my testings.

The spell really increases attack frequency, but not as much as I expected.

In my tests, after my character casted the spell, he was able to swing the summoned stuff 15 times. Without the spell, he was only able to swing the summoned stuff 13 times. Casting either Deleterious or Concelhaut first yielded the same swing times.

So the spell only provides 2 more swings. Not very impressive. 😐

I'll reconsider choosing the spell for my melee wizards then.

Edited 10 hours ago10 hr by IanTheWizard