This is the attack method of "Imagining Overlap": the Swindler, through regular contemplation, presets a template that "Ash is attacking", and when needed, simply overlaps it with the current reality, turning contemplation into reality to create the effect of 'countless Ashes attacking the enemy'.
Perhaps some might wonder why not imagine a more powerful template? There are two reasons: one is if the Mage does not understand the template well enough, then the damage will be greatly reduced—for example, Igula could imagine a dragon breathing fire, but at best, the effect could roast a ralla-fattie; secondly, if the strength of the template in reality increases, then the effectiveness of the "Imagining Overlap" technique will also enhance, which means if Ash's fighting power increases, then Igula's Miracle will become even more ferocious.