If at least one creature in combat has first strike or double strike, you can activate Yuffie's ninjutsu ability during the first-strike combat damage step
Lorcana Rise of the Floodborn sapphire cards Alice, Growing Girl Winnie the Pooh, Having a Think Mrs Judson, Housekeeper Cogsworth, Grandfather Clock Cruella De Vil, Perfectly Wretched Gaston, Intellectual Powerhouse Grand Pabbie, Oldest and Wisest People who enjoy a nice mixture of both old and new Disney will find a lot to love in Rise of the Floodborns sapphire cards, including references to 101 Dalmatians, Alice in Wonderland and The Great Mouse Detective, as well as more modern fare such as Frozen and Zootropolis (known as Zootopia in the US)
If we had a 1-drop Ariel that allowed us to curve into this Flounder consistently on turn 2, maybe
This Disney Lorcana Starter Deck can certainly pick up a win against the others but not as easily as those higher on the list
Im most inclined to suggest a Voltron playstyle for Kefka, since both halves benefit from combat buffs, but honestly, you can build any deck around him