This is an accessibility mod that removes the randomness from Prometheus' "memory game" attack between his phases.
By default, the mod will always make the left (top) and right (bottom) lanes be alternating safe spots. This way, you don't need to remember which lane will be safe next, and only get from one side to the other between attacks.
For even more accessibility, you can enable the centerSafeMode option in the mod config through the config editor in r2modman, which will always make the center lane be safe:
