Read your game state because chances are the more powerful thing to do is replay lands, but self-milling and milling are bread and butter for some Sultai commanders, or it's own flat out win condition
Absolute Virtue Choco, Seeker of Paradise Cid, Timeless Artificer Edgar, King of Figaro Emet-Selch, Unsundered Gogo, Master of Mimicry Golbez, Crystal Collector Hades, Sorcerer of Eld Hope Estheim Ignis Scientia Jill, Shiva's Dominant Kefka, Court Mage Kefka, Ruler of Ruin Locke Cole Matoya, Archon Elder Noctis, Prince of Lucis Omega, Heartless Evolution Quistis Trepe Sephiroth, Planet's Heir Shantotto, Tactician Magician Shiva, Warden of Ice Sin, Spira's Punishment Tellah, Great Sage The Emperor of Palamecia The Lord Master of Hell The Lunar Whale The Prima Vista The Wandering Minstrel The Water Crystal Tidus, Blitzball Star Ultimecia, Omnipotent Ultimecia, Temporal Threat Ultimecia, Time Sorceress Ultros, Obnoxious Octopus Vivi Ornitier Xande, Dark Mage Y'shtola Rhul
Last we have Kaya, Geist Hunter
If the copied permanent is copying something else, then the token enters the battlefield as whatever that permanent copied (with the listed exceptions)
House is trivial
Cycling is in all five colors, but is unevenly distributed
