Im most inclined to suggest a Voltron playstyle for Kefka, since both halves benefit from combat buffs, but honestly, you can build any deck around him
Read on for the full, unedited interview with Wizards of the Coasts Daniel Holt and Dillon Deveney: IGN: Why did you decide to build each commander deck around a whole game this time
Cantrip creatures like Pond Prophet and Spirited Companion are card advantage, because you spend one card and you're up another card plus a body in play
12 Cinderella Ballroom Sensation Out of all the Rise of the Floodborn Enchanted cards, Cinderella is the least impressive
These can be supercharged ways to fuel your Tergrid, God of Fright, Waste Not, or Surly Badgersaur, to name a few
This card allows you to blink a creature whenever anyone cycles a card, and coupled with powerful ETB creatures like Flametongue Kavu or Mulldrifter you can get a huge resource advantage