The Mana Flash is a light emitting block added by Botania, created by Mana bursts launched with the Mana Lens: Flash. It will take on the color of the burst that placed it. Punching it or hitting with a Mana burst of the Flash lens will destroy it, dropping nothing.
A single Mana Flame generates in every Garden of Glass world, providing an early game light source. If the player lost their Lexica Botania in this mode, they can right click a Mana Flame with a Sapling to get it back. This only works if there is no Lexica Botania in their inventory.