From Pikipedia, the Pikmin wiki
The Mystical Disc (ときめきマジカルサークル?, lit.: "Throbbing Magical Circle") is a treasure found in Pikmin 2. It is actually a shiny metal clock face with Roman numerals representing 3, 6, 9, and 12 o'clock. The treasure can be found in the fifth sublevel of the Subterranean Complex. While transporting it, watch out for bomb-rocks and Volatile Dweevils that may drop from the ceiling. This makes White Pikmin the best type for retrieving this treasure, since they can outrun most of the explosives before they go off, especially when flowered.
“There's a strange design on this metallic platter. It gives me mystical chills. Maybe living beings were never meant to comprehend its true meaning?”
“Do not doubt, for the power of a believing heart is limitless. Feel these mysterious patterns... Does your heart open? Only the pure of heart can truly know this mystic circle's power.”
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