Song of Destinies
Later this turn, you can add 1 to the natural result of one ally's d20 roll. Then, afterwards, you can subtract 1 from the natural result of an enemy's d20 roll.
The GM chooses an icon relevant to the situation; you choose the PC who will make an icon relationship check. That player makes the check and joins the GM in a duet of improvisation as to how the icon relationship roll has some impact on the current battle.