Bleeding effect

I need help making a bleeding potion effect for the player.

I want the player to start bleeding and also be given strength and some other potion effects when they right click while holding a specific weapon. Its kinda a sacrifice, cut yourself but get something good out of it. I have tried getting it to work with some help from other similar forums but I just couldn't figure it out (I have no clue how procedures work).

Note: I don't want the effect to affect other players or entities, just the person who did the thing.

Any help will be greatly appreciated.