You can make 315 anagrams from letters in puissant (ainpsstu).
1400-50; late Middle English Middle French Vulgar Latin *possent- (stem of *possēns), for Latin potent- (stem of potēns), present participle of posse to be able, have power; see Examples for puissant
She was the wife of the puissant Secretary of State, the mistress of the King. Be puissant as your ancestors of old, the heroes—proud, pitiless, and haughty. We came at night, just as now, upon this castle of its most noble and puissant lord. For he deemed a lady so much sought after must needs be a puissant dame. The most puissant pen is powerless, the brightest colour too cold. Perhaps the wise and puissant of the future were to germinate there. Mr. puissant has charge of the dairy, and he performs his work well. Not the least common or puissant of these was the healing of the sick. His spirit was puissant, elemental, his activity irresistible. Also the style is worth the labour,—puissant, compact, and melodious.