Pastel Castle: Postcard on a Prank

Looks like it's an invitation to Pastel Castle, but there's something about watching out for fun traps and illusions (meant for entertainment, not to harm, unless the person is truly asleep of heart which can appear malicious - in which case, they will awaken)! One must breathe and trust the unfolding of self. There is a short phrase which means all of this, in the local language, roughly translated as "Prank of Plenty". :)