Deep Sleeps was a mysterious contagion that put animals across the Ever Realm into a deep slumber that couldn't be woken from under regular means. The only known cure was drops from a Wakey Up Daisy grown by Miss Nettle, with help from Princess Ivy's butterflies. Something similar happened with a lot of the ballroom people in Sofia the First: Once Upon a Princess, when Sofia uses Cedric's spell to make herself a good dancer.