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I think Fervor and Memory Lapse are sticking out a bit off the top

Bandais 2005 English Debut: The "Rookie" Era of the West While Japans One Piece Carddass Hyper Battle (1999) set the stage , the English-speaking world had to wait until 2005 for Bandai to launch the official One Piece Collectible Card Game (2005-6)

Does Anyone Really Know What Timeshift It Is

The Second Sun is a 7-mana sorcery that gains you 7 life the first time you resolve it, and then wins the second time you resolve it, so that's strong

But I like to play fun and interesting cards that dont always cater to deck optimization

These are by no means the only sideboard options available, so always think about how you can adjust your creatures and removal to better adjust what threats or answers your opponent presented last game