Phineas And Ferb: Season 4, Episode 23

4 - 23:

In this trilogy of strange tales, Candace accidentally conjures up a spell that turns her Ducky Momo plushie into a living, breathing doll that is set on stalking her, Doofenshmirtz encounters the inexplicable Giant Floating Baby Head that grants cursed wishes, and Phineas, Ferb and their friends confront a horde of mischievous, evil platypuses set on destroying the town.