History Recap / OnceUponATimeS3E22TheresNoPlaceLikeHome

* AccidentalHero: While looking for a means of escape from Rumpelstiltskin's vault in the past, Hook's casual action of taking a certain magic urn out of a cupboard ends up causing the happy ending of the Season 4 ''[[Film/Frozen2013 Frozen]]'' arc. The urn is pulled through the portal with him and Emma into present-day Storybrooke where it releases Queen Elsa, who (among other things) ends up saving the lives of Anna and Kristoff by wishing them into her presence.

* EvenEvilHasStandards: Rumplestiltskin has ''an entire room full of things that even '''he''' dare not use.''' When Rumplestiltskin, who is ''the literal Dark One'', doesn't use something you ''know'' it's bad.

** Hook also references the trope when warning Emma that her saving the woman in the dungeon could have unforeseen consequences such as her raising a mass murderer or accidentally killing one of the dwarves while drunk. Emma's solution is to take her back to the future with them so her presence won't change the past...but this ''still'' has consequences, since she turns out to be Maid Marian, ruining Regina's happiness with Robin Hood. As petty as her response is (since Marian wouldn't have been in danger and need rescuing in the first place if not for her), Regina is absolutely right to tell Emma she DidntThinkThisThrough. And of course, she also accidentally brought back the Ice Queen as well ([[IncrediblyLamePun a literal snowball effect?]])...

* YankTheDogsChain: Bringing back Robin Hood's wife just when he and Regina have fallen in love and she has become one of the good guys.