I’ve noticed that when I had selected this talent, and then I changed it to another one of the same level, I still received the bonus attack speed when hitting at least 4 enemies.
I tested it on dummies.
- I selected Immersive Immolation.
- Attacked a few times, saw how it works.
- I changed the level 25 talent to Fires from Ash.
- Attacked the dummies, and when I hit 4 dummies with one strike, I get the icon of this bonus and I can see that my following melee attacks get the boost.