Berserker Potion

I added a simple potion that gives you a lot of combat advantages and is brewed by adding a diamond sword to a normal strenght potion. Aditionally, you can make a Powerful Berserk Potion that gives you 2 times all of the effects, brewed by adding a glowstone block to the normal Berserk Potion. Effects:

-reduces burn time

-multiplies attack damage

-increases knockback

-increases speed

-decreases fall damage