Missing 50% speed running (frenzy)

This a strange question I think, but at the beginning of January before the patch/upgrade I was playing with a unit that was a priest that had an ability that seems to have disappeared. I can’t remember exact, but it was like what a siren frenzy had as an ability. A cry or screech that allowed units to run 50 percent further for the current turn. What is the feature, who has or had it and does it still exist. Thanks in advance for answers as I have been going crazy looking for it in another new game.

It’s a head mutation for priests (the middle one). You also have stimpacks that give frenzy (but that’s a bit later in the game).

Thank you so much. I honestly thought I was losing the plot!