Instead of using the quest package to add a coin to hand and then playing Antonidas into coin into potion, this deck uses Incanter's Flow to discount the Potion of Illusions. This seems much easier to pull off than having to add a coin to hand at the cost of including quests which are practically useless.
In case you draw both potions before you can cast an Incanter’s flow, I included an Educated Elekk to cast a potion on so the potion gets shuffled back into your deck for you to discount.
Note that the elekk doesn’t have to be used explicitly for this purpose as you can play it with any freeze spell (Frost Nova, Blizzard etc.) if you need to stall more. You could play elekk with Arcane Intellect for more draw. Also if you have a secret and Ancient Mysteries in hand with no secrets in deck, you could play the elekk with the secret and then draw a 0 mana copy of it with the ancient mysteries.