So here's the idea. once you get 7 wizard towers, an upgrade pops up that says "you may now brew potions". When bought, a potion upgrade appears that when your mouse hovers on it a sub menu shows up with all the different potions you have unlocked. they all have costs and brew times. you pay the cost and wait the brew time, and it pops up next to your upgrades. you click on it, you get the effect. Then, you can make more potions! (once you have a potion, you cant make more while you still have it.)
-Cookie potion: cost: your cps*70000 cookies brew time: 3 hours effect: double your cookies.
-Brewer's potion: cost: your cps*5000 cookies brew time: 1 hour effect: for the next 8 hours, all potions only take 1 hour to brew.
-Flaming potion: cost: 5% of your cps while this is brewing brew time: 8 hours effect: for 1 week, your cookie is protected from enemies (thing like wrinklers) and when they try to eat your cookie, destroy them and get 10 million cookies.
-Illusion potion: cost: # of buildings you own*100000 cookies brew time: 3 days effect: choose a building. unlock any upgrades you would unlock if you were to have 15 more of that building than you currently have.
-Summoning potion: cost: # of buildings you own*300000 cookies brew time: 12 hours effect: construct 4 random buildings of types you own at least one of.
-Other-world potion: cost: your cps*66666 cookies brew time: 13 hours effect: summon an other-worldly wrinkler. while it is alive, you get -25% cps.
-Old cauldron: unlock: own 7 wizard towers cost: 200 million cookies effect: unlock potions. unlock the "cookie potion". text: "a bit leaky"
-Sorcerer's stash: unlock: have brewed 7 potions cost: 777^how many time you've bought this upgrade before+1 effect: unlock a random new potion. repeatable. costs more each time you use this upgrade.