You would be able create simple potion with empty bottle whether it's a potion or poison. Every time you use your ability, you would have a small chance of failling and would automaticlly be applied with poison, harming, weakness, and harming for a short amount of time. The cooldown time would be 2 minutes or it would be longer or shorter depending on the choice how it is made. You would also be equiped with a healing and swiftness potion as a starter.
So basically every 2 minutes, you will be able to have a random potion and when it fails, you inflict damage/poison on yourself in a small amount of time? It sounds confusing, can you go a little more in depth? Btw I think the word you're trying to look for is called alchemist.
Its a skywars kit bump so we get a bottle and we fill it up and if we dont do it right we inflict dmg,poison, and weakness so example: moek is running from a guy as usual in anni he needs pot of health then he gets slowness and the guy kills him the end? -1 needs more tweaks and should have more details go deeper in the information please <3