While players have certainly found ways to make powerful decks - with some popular meta decks becoming mainstays in tournaments - the community generally finds ways to combat these and develop counter-strategies, without the need for any cards to be banned from play yet
It's possible to play and enjoy Disney Lorcana without ever paying any mind to card rarity, but understanding it can be really helpful for players trying to get specific cards for their collection or for a specific deck
The series will release in the fourth quarter of this year
Wrecking Ball Arm is a similar story
Meanwhile, you have one-cost Flynn Rider Confident Vagabond which can be helpful in the Steelsong matchup, protecting your character from being picked off by Cinderellas singing ability
Lorcana is coming off a 4th set championship, and players have received their first game-changing errata to a card that was seeing a lot of consistent play: Bucky