it has low chance ;)
how lows the chance? i've been over 200 runs at this point, resetting whenever i hit the cap for petals and i haven't seen it, and i even got the first aura already but that harvest aura has been out of my reach, not even that scroll reel changes the location of where the mythic is so im not even teased with being close, its static as far as i've seen every single time.