H - Heated Heart (DR04-EN218) - Dark Revelation Volume 4 Unlimited

Choose a face-up monster on your side of the field to activate this card. Increase the ATK of that monster by 500. When that monster attacks a monster in defense mode, and the ATK is higher than the DEF of the defending monster, inflict battle damages to your opponent equal to the difference. This card''s effect lasts until the end of turn.