Once you have enough Treasures, you can dump all that mana into a Hellkite Charger, and you have yourself an infinite combat loop
This means you can then return the Clone itself, since its base toughness will be less than the compared toughness from when it was on the battlefield
While theres a lot of hype early in the Azurite Sea season for other decks like Emerald/Amthyst, I think we will likely see Ruby/Sapphire end up on top as the weeks go by in this season as well.
As with some others on this list, it can get out of hand pretty swiftly, and while Wizards would get more ambitious in the years since, it remains a really fun deck (Ive upgraded mine)
When paired with late-game mana ramp, a Roil Elemental can be used to steal several key creatures from an opponent, potentially swinging the game in your favor