Introduction
Fusionism is the ability to fuse anything with other things such as people, objects or even abstracts idea to form something entirely new.
This can be used to fuse different weapons to create a stronger one, to fuse people or animals to create new living beings, to fuse yourself with the environment or objects and gain new abilities, it can even work to fuse even different concepts or abstract beings together as long as the ability is explained.
Limitations
This ability has potentially a very wide range of use, however it has also very common limitations such as being bound by a time limit, not having a control on what you fuse, or being useless if you fuse 2 wrong objects that together doesn't work or are not compatible.
Users
Characters from (Yu-Gi-Oh)
Characters from (Dragon Ball)