A lot of fun can come out of taking the situations that are given to you and winning in ways that the deck would not normally be able to, simply because it is using the cards on hand from your opponents
3 new secret rare cards to improve Decks built around the Dark Magician and the Dark Magician: Eternal Soul, Dark Burning Attack and Dark Burning Magic 3 Ultra Rare Token Cards
More importantly, Reno unlocks one of the strongest aggro plays in the game, letting you raid him early in the game, play a three-cost Bakko for free, pushing up another character, and then swinging through as many as three attacks in a single turn
In the case of Keruga, the companion requirement is that your starting deck contains only cards with a mana value of three or greater and lands
It requires another card to make you become the monarch, which isn't great