There are only two ingredients needed for the Sus Potion itself, Beans and a Hat of Gears; however, these ingredients will require a bit of time to collect if you don't have them already. For a complete list of every potion and ingredient in Wacky Wizards, be sure to check out our guide here.
A full guide on how to collect the Beans can be read here. Unfortunately, the Hat of Gears is a premium item, meaning that you'll need to purchase it with gems. Players can earn gems for free by completing quests and defeating enemies though it takes a while, and are also available to purchase with Robux.
Once you've collected the two ingredients needed, toss them into your cauldron and mix! After drinking the potion, you'll see yourself transform into a Roblox-ified Among Us Crewmate. Play your cards wisely with this potion, or you may be outed as the imposter!
For more Wacky Wizards guides, be sure to check All Level Rewards in Roblox Wacky Wizards on Pro Game Guides!