It's My Student's Farewell. I Want It to Be Proper.

[Main] You may give 1 active DON!! card to 1 of your [Silvers Rayleigh]: Give up to 1 of your opponent's Characters −2000 power during this turn.

[Counter] Up to 1 of your Characters or [Silvers Rayleigh] gains +2000 power during this battle.