Hey guys I have some new info about your quirk 'Dark Copy'

Combing quirks : When the user combines quirk such as Endeavors fire and Dabi's fire to make the black fire quirk the user can only use those quirks for 5 minutes until they can't use it anymore and the user has to wait 10 minutes until they are able to use that quirk again. The user also has the ability to give those combined new quirks to others as well.

Here is also another drawback just to make you a little, just a little less overpowered.

Drawback : When the user is using to many quirks they can become exhausted and if the user uses 10 quirks for 30 minutes or more they will pass out from exhaustion.

Also some extra stuff I might think about doing a harem in this story because why not, I'm doing one for my villain story so why not do it in this story as well, there will also be a few genderbends for the harem as well.  Does that sound like a good idea comment down below.