Duel Monsters 6 Expert 2 shares a similar history to its prequel, Yu-Gi-Oh
Not only does he get tempted by the Ring every time you eat something and attack on the same turn (something that's easy to do with vigilance), but he also starts drawing cards once you get tempted twice
5 mana for a 5/5 flyer
Those seeking to do slightly less terrible things to their friends during casual commander games will find repeatable mass blink effects that net you cards (Cloudblazer, Unquestioned Authority, etc.), the ability to get around mana costs through the Manifest mechanic (Cloudform, Scroll of Fate, etc.), or even double mana from mana rocks is plenty sufficient when it comes to generating incremental value
choose 1 other face-up monster on the field, and its name becomes that "Cipher" monster's, until the End Phase
Nuka-Cola Vending Machine is also pretty below rate, but churning out Foods every turn and giving you Treasures when you sacrifice Food are both powerful, even on just the standalone card