VW-Tiger Catapult + XYZ-Dragon Cannon. This card can only be Special Summoned from your Fusion Deck by removing from play the above cards on your side of the field. (You do not use Polymerization). Once per turn, remove from play 1 card on your opponent's side of the field. When this card attacks, you can change the battle position of the attack-target monster. (Flip Effects are not activated at this time.)