Well, thats up to six extra combats
Custom accessories are one of the easiest ways to make a deck feel more polished at the table
However, when the dominant combo deck is Creativity, Zoo looks a lot better
Board wipes are naturally powerful in Commander, especially given how many players tend to flood the board with Creatures and how quickly boards can snowball out of control
Kefka, Court Mage // Kefka, Ruler of Ruin I just wrote a deck around this Grixis leader you can find here - ( This five-drop 4/5 transforming body has an attack trigger to make everyone discard - you too, but no worries since you'll draw equal to the number of card types discarded
Thats still pretty good for artifact decks, and extra mana generation plays quite well with Future Sight effects