The creature sagas are a slam dunk lore win for Final Fantasy fans, and a juicy deck-building challenge for deck brewers, so we're not surprised that people are buying up support pieces for them before the new set has even arrived on the MTG release schedule
Clones take many forms, pun fully intended, but the traditional use of the name refers to shapeshifting permanents that either enter the battlefield as copies or copy something else at a later time
It also gives us a card that we can cast from our graveyard after our opponent mills it, while exiling cards from our graveyard is a good way to power down Rogue threats like Thieves' Guild Enforcer and Soaring Thought-Thief, which really need eight cards in our graveyard to be at full strength
This leads me to my first honourable mention: General Kreat, the Boltbringer , is a Legendary version of Witty Roastmaster
Beyond that, I think it has a real chance at breaking into Magics older formats, too