My Feedback on KANSAS TWIST Spell at Soulkeep

In my Journey in Soulkeep I want to try spells as I could so I can have a complete image of what I will play with and what is best for every wave and in this time I will try KANSAS TWIST which seems to be very strange spell as it can be used using 40 Mana which is very high for a spell.

So I was curious what will a spell for 40 Mana can do against fiends and as you can read below it has 150 Range and duration of 15 seconds and it slows down fiends so it can used for waves with fast fiends but it there is a trick for this spell as I have discovered so its duration would not be wasted.

KANSAS TWIST
Summons a fierce tornado that drastically slows fiends down until they can regain their composure.

🌐 Range: 150
⏳ Duration: 15

This spell slow down fiends and it make what is like a storm against fiends so they were as they stopped but it can not damage them so the trick that I was talking about is that you have to use it near a strong tower to get most of it as its duration is not much so you have to attack fiends quickly while they are in this condition and also you can use a stew of doom or a bomb with it so fiends will accumulate in this are and be eliminated together.