Q&A for How to Make a Potion of Swiftness in Minecraft

By using Redstone dust. You can't make a potion of Swiftness 2 last longer though, so choose wisely!

Unfortunately (or fortunately depending on what side of the splash potion you're on!) there is no potion of weakness 2. You can find potion charts easily online, though!

Nether wart can be found growing in nether fortresses and bastion remnants. They can also be found in chests in nether fortresses.

Yes, there are 2 potions in Minecraft which are able to give you health, regeneration and instant health potions. Instant health potions are made by placing a glistening melon in a brewing stand with blaze powder and fuel and awkward potions as a base. These instantly give you health. Regeneration potions are made by placing a ghast tear in a brewing stand. Regeneration potions slowly give you health over time.

A potion of the turtle master can be made by placing a turtle shell into a brewing stand with blaze powder as fuel and awkward potions as the base. Turtle shells are made by placing scutes in a helmet formation in a crafting table. Scutes are obtained by killing baby turtles which have grown into adults.