This clever self-mill engine turns a seemingly defensive enchantment into a relentless milling machine by repeatedly targeting your own attacker. By declaring Cephalid Illusionist as an attacker and pointing Reconnaissance's zero-mana ability at it, you trigger the Illusionist's ability to mill three cards every single time it becomes targeted. Because Reconnaissance allows you to untap and remove the creature from combat at instant speed without restriction, you can loop this targeting process infinitely to grind through your entire library in one go.