Damage Control (D-BT01A-EB01/0060EN) (D-BT01A)

[Set] (this card remains on the field.)
[Counter][Act] During your opponent's turn, discard a card from your hand. If you do, the next time damage would be dealt to you this turn, it is reduced by 2. If the card you discarded is "Battle Deity Robo", the next time damage would be dealt to you this turn, it is reduced by 4 instead. You may only use this ability once per turn.