Running a Sakazuki deck is about imposing your strategy on your opponent, dictating the pace of play, and maintaining board control through efficient removal and versatility
Theres also a Seedborn Muse floating around in this deck, which helps you be prepared for practically anything on your opponents turn by untapping all your permanent each turn
Animar, Soul of the Elements feels like the most obvious choice, synergizing extremely well with all of the high-cost creatures in this deck while also resisting common targeted removal
Is a Pikachu card a good investment
Any land that's a Swamp has the ability ": Add." Nothing else changes about those lands, including their names, other subtypes, other abilities, and whether they're legendary, basic, or snow