The Golden Potion is part of the "Gold Pack" that players were granted who bought the Early Access - version of Creativerse before it became F2P on November 11th 2015 with update R25. The Golden Potion can only be crafted in your crafting menu (opened by "Q" as the default key) when owning the crafting-recipe that was received as a gift. This potion cannot be found anywhere on the game-worlds of Creativerse. It has a cosmetical golden sparkle effect for the player-character when consumed. To craft 1 Golden Potion you'll need (as of R27 in January 2016):