Counterspells, especially free counterspells like Mental Misstep and Force of Will, also seem like a really sweet way to leverage the free guys from Young Pyromancer, since you essentially disrupt their turn and add some beatdown to your side of the board
It's debatable just how much the value of Vivi's Persistence is upheld by the infamy and power of the character in its artwork, and how much it's based on the card's own merits
Tomer shows you how to fix it
The Dragon Fire Lorcana card, for example, features Disneys Maleficent in her dragon form, breathing cursed green fire. Use of this card will allow players to banish [a] chosen character. We also glimpsed a new Disney Lorcana card that brings a cheerful face to the gaming table, Olaf
Abhorrent Oculus comes in at 3 mana
while I don't wholly agree with that means of assessing power, the fact you can probably cut the deck to the sub-$300 mark doesn't hurt either