Piranha Plant (Paper Mario: The Thousand-Year Door)
From the Super Mario Wiki
Piranha Plants are enemies found in Paper Mario: The Thousand-Year Door. They are the strongest of all Piranha Plants and like to live in Pipes. They have the second-highest attack power in the game, exceeded only by an Amazy Dayzee's attack power, which is 20. It also has absurdly high HP, only being beaten out by a handful of non-bosses, such as Dark Craws and Dark Koopatrols.
Piranha Plants are rare in Paper Mario: The Thousand-Year Door, found only in the Pit of 100 Trials in floors 81-89. They are also one of the more powerful enemies in Paper Mario: The Thousand-Year Door, having a large amount of attack power and Health Points.
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