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When Mario, Luigi, Starlow and Dreambert collect the five Zee Parts that are required to create the Ultibed, they get Bedsmith to put it together for them in Somnom Woods. Luigi tries to sleep on the Ultibed immediately, but Bedsmith tells him that he cannot create a Dream Portal unless he sleeps in the Pi'illo Temple, which is said to magnify dream powers. Upon arriving at the temple, Pi'illodium, its guardian, awakes and attacks the group, believing they are intruders. When Mario and Luigi defeat it, Luigi can finally create a Dream Portal, allowing Mario to access Dreamy Somnom Woods and find the Zeekeeper.