Idealist's Handmirrors are consumable items in Unicorn Overlord that can be used to change the appearance of characters and alter their Growth Types. Those two applications make Idealist's Handmirrors extremely valuable, and players who want to create the absolute best units will need quite a lot of them. Fortunately, there is an unlimited source for Idealist's Handmirrors in Unicorn Overlord, and this guide explains where players can find it.