Over the past few years, Wizards of the Coast has been fantastic about creating novel inclusions in packs of their premier trading card game through the initiative known as "Booster Fun"
Tormod, the Desecrator [Best Partner Option for Graveyard Movement Triggers] Tormod, the Desecrator generates Zombies whenever cards leave your graveyard, rewarding recursion loops and exile-based synergies
You'll be losing 1 life each time you flicker Yannik,,so you might want to run Soul Warden or another way to offset that life loss
While not as valuable as the cards mentioned above, you can never feel bad cracking a fetch land from a booster pack of Magic, and I expect these to remain over $10 despite the reprint, with old-bordered variants commanding a nice premium
Hall of Confusion Plane: Ushval Players play with the bottom of their deck face-up
This deck is aggressive and will likely steamroll any overly casual Commander decks in Bracket One