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
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
If you do, exile the top X cards of your library, where X is the number of skewer counters on this creature
Please don't run them in normal Commander outside of cutthroat stuff and metagames
Beyond that, I think it has a real chance at breaking into Magics older formats, too