Here's the cards you need in your hand: 2 x Blue-Eyes White Dragon OR Fusion Substitute 1 x Blue-Eyes White Dragon 1 x Polymerization OR Fusion Sage OR King of the Swamp 1 x Dragon's Mirror Consider that Blue-Eyes White Dragon can be searched out very easily by Kaibaman, The White Stone of Legend, Maiden with Eyes of Blue and Summoner's Art, and Polymerization by Elemental Hero Woodsman
If, during your attack, the number of monsters your opponent controls is changed, a replay is triggered in which you can choose to attack with the same monster, attack with a different monster, or not attack
Taking pride of place on the starter decks box is Simba, Returned King
Plus if she blocks or is blocked, she'll first strike and deathtouch and kill the one engaged with her and trigger stuff to come back to your hand, so she's even good in the red zone