There are some obvious jokes here - maybe the famous philosopher's inclusion in the game necessitates renaming it Magic: The Symposium - but, all that aside, we do have a pretty good card here
Honorable Mention #1 (#13 Overall) - Konda, Lord of Eiganjo Let's get this thing started off with Konda
Includes many cards from the keyword "Floodborn," which is linked to the story
Name a basic land you aren't playing, or a key land a few others have, like Maze of Ith, and then force them to head out to the exile zone every other turn, and you will be able to deal with junk
#11 Caduceus, Staff of Hermes Caduceus is extremely exciting for Commander, particularly because the downside doesnt matter too much