black bolt deluxe booster box (JP) cards like Zekrom ex Black Bolt JP Deluxe Booster

The two black creatures pair well together because Dark Confidant reduces your life total, enabling Cecil to transform more quickly

Proliferate works wonders with this card, and in some scenarios, it can even go infinite

Even with "World Key" available, the deck's swarming takes time and tends to rely on Spells and Traps that need set-up, like "World Legacy Landmark" and "World Legacy Succession"

Cards like Snapcaster Mage, Mystic Sanctuary, and Arclight Phoenix have all seen play at the highest levels of competition and they all care about you playing a lot of instants and sorceries

Its not like youll be hurt either way due to value increases