Hypnosis butterfly tattoo
(Damn this name sounds stupid  please feel free to change it)

This user gets a butterfly tattoo somewhere on their body on each birthday (once they've gained a quirk). For example; say you're 16 years old and you got my quirk at 3. You would have 14 butterfly tattoos. 

When this user activates their quirk, the butterflies float off their body emitting a hypnotic glow to anyone the user wants. This glow is mainly used to knock people unconscious, but it can also be used as mind control depending on how old the butterfly is. The more butterflies a user the more people they can use their quirk on. Each butterfly works on 2 people per day! So going back to my example earlier you would only be able to use your quirk on 28 people per day (at age 16).

As my example stated earlier you were 3 when you got your first butterfly, and now your 16. 

Each butterfly starts weak only able to knock someone out for 3 minutes but each year it doubles.

So when you're 3 years old, you have 1 butterfly that can knock 2 people out for 3 minutes

When you're 4 years old, you have 2 butterflies. The new one knocks 2 people out for 3 minutes and the older 1 which can knock 2 people out for 6 minutes. 4 people are knocked out in total.

When you're 5 years old, you have 3 butterflies. The new one knocks someone out for 3 minutes. The one you got last year can knock someone out for 6 minutes, and the oldest one can knock someone out for 9 minutes. Which 6 people knocked out in total. Etc etc

(If you still don't get it, take away 2 from however many years old you are. And you get the number of butterflies u would have)

Now once you turn 10 your oldest butterfly which is 8 years old will not only be able to knock 2 different people out for 24 minutes, BUT this is also when the hypnotism aspect of the quirk kicks in, allowing you to control the person. But since the hypnotism aspect is new it is hard to control it only lasts for about 1 minute. And only works on one person per butterfly.

Okay Now finally you are 16 and have 14 butterfly tattoos on your body. Each butterfly can only be used on 28 people. But the butterfly can only hypnotize 1 person as long as they haven't knocked 2 people out yet. If the butterfly has only knocked 1 person out they could still be able to hypnotize someone.

Ngl this quirk is probably really confusing, so if you need help understanding something I'll try my best to help.
  This is one of my favorites that I've created! This quirk was inspired by Shinobu Kocho from Demon Slayer. A show that I love-  but that's beside the point. There is a chance I might end up using this quirk for a story that I make but if I do ever write it, it's probably going to be handwritten because that's the only real way I can get a story done. I suck at writing stories online😌

Minno