That's right, Spark Fiend is a Magic port of the casino dice game
You can find a (rather cool) sample decklist, as well as a tournament report, here You could, of course, also just play and enchant Yavimaya Enchantresses and kill your opponent with some, not dark, but beautiful and terrible as the dawn ladies
There are also a couple one-off elder dragons: Modern Horizons 2 printed Piru, the Volatile as the first wedge tri-color elder dragon, and Final Fantasy Commander brought us Hraesvelgr of the First Brood
A few times, I hit a Vampiric Tutor, dropped a second-turn Bitterblossom, found said Vampiric Tutor, and had the game basically wrapped up by casting my Commander on turn three