Their power comes from the extra value you get on top of playing enchantment cards, and building up a critical mass of triggers to outpace your opponent
after a maximum of 10 hours, switch it off for at least one hour

Advanced Search Sets Random Syntax Abigale, Eloquent First-Year Abomination of Llanowar Adamaro, First to Desire Adeline, Resplendent Cathar Adeline, Resplendent Cathar Adric, Mathematical Genius Adun Oakenshield Agatha of the Vile Cauldron Agent Bishop, Man in Black Ajani, Nacatl Pariah Akal Pakal, First Among Equals Akiri, Line-Slinger Alex Wilder, Runaway Alexander Clamilton Alicia Masters, Skilled Sculptor Alrund, God of the Cosmos Ambassador Laquatus Anax, Hardened in the Forge Anhelo, the Painter Anim Pakal, Thousandth Moon Animar, Soul of Elements Anje Falkenrath Ant-Man, Elusive Avenger Aphelia, Viper Whisperer April O'Neil, Hacktivist Arabella, Abandoned Doll Aradesh, the Founder Araumi of the Dead Tide Ardoz, Cobbler of War Ashaya, Soul of the Wild Ashling the Pilgrim Ashling, Rekindled Ashling, Rimebound Ashnod the Uncaring Ashnod, Flesh Mechanist Augusta, Dean of Order Augusta, Order Returned Aunt May Avalanche of Sector 7 Azami, Lady of Scrolls Azusa, Lost but Seeking Azusa, Lost but Seeking Baldin, Century Herdmaster Balmor, Battlemage Captain Banon, the Returners' Leader Baral, Chief of Compliance Barbara Wright Barrin, Master Wizard Bell Borca, Spectral Sergeant Ben-Ben, Akki Hermit Berta, Wise Extrapolator Bess, Soul Nourisher Big Bertha Bilbo, Retired Burglar Bill the Pony Black Tom Cassidy Boomerang, Blade Flinger Braulios of Pheres Band Brawn, Amadeus Cho Breena, the Demagogue Bruce Banner Bruvac the Grandiloquent Bugenhagen, Wise Elder Caelorna, Coral Tyrant Cait, Cage Brawler Callaphe, Beloved of the Sea Cam and Farrik, Havoc Duo Captain Vargus Wrath Charix, the Raging Isle Chevill, Bane of Monsters Codie, Vociferous Codex Commander Sofia Daguerre

The closest equivalent is Maelstrom Nexus, which is 5 colors and still requires you to cast things
Although I find that works best with the maximum of drafters your Cube can support - typically 8, and not well for smaller numbers
Any effects (such as proliferate) that interact with counters a player gets, has, or loses can interact with rad counters