Mythic reverb on Fixation

[Saccharine]

You can imbue Haze's Fixation with Mythic Reverb if you press the '3' key when buying it, this causes you to add the Fixation 15% slow debuff to targets around the primary target.

This adds extra stacks during ult causing more damage
View attachment Haze bug.mp4

 

[Grimdrome]

Looks like this key button thing works with all items that can't normally go onto any specific ability. I tested every hero with reach/cooldown/duration/reverb for their abilities that can't normally get it.

Mythic Reverb also works with Infernus' 3.

The only other interaction might be dynamo duration on their 2. But I might be just tricking myself on that one. All other interactions don't work or are redundant (reach one infinite reach abilities).