Boss Potion aka Conans might potion

Pretty much a potion that last for 10 minutes and is only useable against boss type creatures and only effects the user,The potion would be a high resource usage to make tobe balanced for solo players compared to groups and would be used to help fight against them the buff would be a damage boost against bosses dreg,dragons,king scorpion e.g. not mobs though. Hopefully this would help solo players to progress the story and areas more easily.