Satellite Laser Balsam

[ Machine / Fusion / Effect ] "Satellite Cannon" + "Satellite Cannon" + "Satellite Cannon" Must be Fusion Summoned. Once per turn, during your End Phase: This cards gains 3000 ATK. If this card attacks, this increased ATK returns to 0, after damage calculation. If this cards attacks a Defense Position monster, inflict piercing battle damage. ATK/ 0 DEF/ 2000