Shadowverse

He is not affected by summoning sickness and attacks immediately upon appearing on the battlefield – any opponent, whoever he chooses. He will destroy any follower with a single blow, and no one (except for a couple of extremely mechanically balanced cards) can ignore him and is forced to go all out to stop him. When he appears on the battlefield, he becomes target number one, as befits a true boss and master of the board. Pre-nerf Bahamut was the only one who surpassed him in grandeur and power level, possessing the most powerful physical form and destroying any army (except for one extremely mechanically balanced card) with his fanfare ability, and even then, Zeus could jump out of hand and destroy him at the cost of his own life for that same single blow. And if the developers have truly "changed course," then they will never come up with anything better or more powerful than these two cards. That's when everything will devolve into mediocrity, and all that will be left is to close one's eyes to the imperfections of this world, as Eris did.