On Ante 1, in the first store, you can get two Mimes — one from the Joker pack, and then you can duplicate it using an Ankh from the Spectral pack in the same store.

On Ante 3, after defeating the Small Blind, you might find a pack in the store with a Legendary as well. There are also tons of great options to help you get a high score.

As a bonus tip, I highly recommend skipping the Small Blind on Ante 2.