Megacosm

Megacosm (天地人) is one of Lexaeus's weapons in Kingdom Hearts 358/2 Days. It can be upgraded to Megacosm+ and Megacosm++.

Trivia
The trinity of "Heaven, Earth, and Man" is an important tenet of Confucianism, and appears in many places in Chinese and Japanese philosophy. They are considered the most important aspects of a battle, and Japanese Ikebana arranges flowers in a triangular pattern to symbolize these three tenets as well.