The potion of combining
it mixes 3 different potion buffs that you select this will be useful when using them because it means when your in battle you can use this to get back into the fight quicker and saves time trying to hide for long periods of time, you'd be able to use this as a drinkable and throw able potion.
To make this you put three different potions in a brewing stand or three of the same to buff the original potion .
No matter what it all buffs you put in lasts for 15 seconds and cannot be extended