User blog:Trident81/The Most Powerful Quirk

I was thinking about what the most powerful quirk in BNHA is.

All for One could be the most powerful quirk but if you look at his quirk on its own, it's not really that powerful because it doesn't really have any power until he steals someone else's quirk if you look at it that way. But also looking at One for All, it has amazing power but breaks their body if they go past their limit. It seems that all of the powerful quirks have some kind of set back which makes their quick not as powerful and that it depends on how the owner uses them, while other quirks are pretty useless. What is/could be the most powerful quirk in the show?