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Raises the power of the holder's Water-type moves 20% when this item is held. Pokemon with Multitype become Water-type when switching in while holding this item.
On any Pokemon other than Arceus, this item performs almost exactly like Wave Incense; for information on the competitive use of this item, see the Wave Incense description. The only difference between these two items is the Fling Base Power; Splash Plate has 90 Base Power when Flung while Wave Incense has 10.