The Lava Repellent Potion

A status effect that enables any affected entity to completely ignore lava. If a player drinks this potion and jumps into a body of lava, they will be able to move as fast as if they were walking on land when they're at the bottom, take the accurate amount of fall damage from their jump, and will not be able to burn from it, but will still be able to burn from fire related attacks.

This is brewed by a Thick potion and Blue Ice.