Gigan vs SpaceGodzilla

Choose target creature you control and target creature an opponent controls. Target creature you control gets -X/-X, where X is equal to target creature an opponent controls power. Then that target creature gets -X/-X, where X is equal to target creature you control power. For each creature that dies this way create a 1/1 colorless Crystal Pillar artifact creature token with “{T}: Add {C}.{/color#ffffff}