Archmage's Vicalyke is a Legendary Wizard Hat for the Wizard in Diablo III. It requires character level 31 to drop. Its unique property gives each of the Wizard's Mirror Images a chance (exact percentage unknown, possibly depends on runes) of splitting in two when destroyed by enemy, but not when expiring naturally. Spawning new Mirror Images will despawn all existing ones, always spawn two images (even with Duplicates rune), and they won't benefit from runes and augmentations (but can split further, in theory being able to split infinitely).