RED Hearth Elemental I like this more than Invasion of Mercadia since you can cast it while hellbent and draw two, giving it some nice playability in decks that dump their hand quickly
As you might expect from these prices, theres currently very little supply for Gogo, Mysterious Mime
Wizards of the Coast has released dozens of Commander precons across multiple sets, including yearly product lines like Commander 2020 , Commander 2021 , and special sets like Modern Horizons 3
Along with new art cat tokens, many of these cards are mentioned above as some of the strongest cat cards in Magic, and I think this Secret Lair did a good job of capturing some of the better choices available for new art treatments and a special release
While Im not sure if it truly makes the cut in cEDH, you could also cast Return the Favor to make your own copy of the enters-the-battlefield ability of Thassas Oracle to win on top of their ability on the stack