Power Plus (Super Paper Mario)
From the Super Mario Wiki
The Power Plus is an item appearing in Super Paper Mario. Similar to the badge of the same name, it increases Mario's max attack power by 1. However, unlike the badge, its effects are permanent. It is found by using Cudge to uncover a hidden switch near the Flopside Pit of 100 Trials, then opening the big treasure chest that gets uncovered.
Additionals can be purchased from the Flipside Arcade for 2500 tokens.
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