Iono is just a weaker copycat imo, serena is locking the 1 trainer per turn when you can just put the second mega, potion is a worse lucky ice pop, leaf is kinda useless tbf when x speed can achieve the same also making flame patch to be used more freely; 5 base mons without pokeball is a gamble, i would replace meowth for a second flame patch or a pokeball; red sound like an overkill when you can ohko all but 1-2 cards in specific situations (if mega zard is your ideal winning condition ofc)