TCG Stadium will be covering every step of this Mega Evolution resurgence, so stay tuned for more card reveals and analyses as we approach the launch of this expansion (rumored title: Phantasmal Flames )
Obviously you'll want a few demons chained up in the deck in case you can't get the requisite four card types in the graveyard, but delirium's usually active at some point, after which you've got an unfettered 2-mana tutor at your disposal
A 3-mana 3/3 that provides additional pressure and transforms into a stronger version of itself and forces your opponent to 2-for-1 themself to remove it with incidental lifegain attached to the incidental graveyard its rather absurd to think about
Each other player in turn order does the same
Its Flower Selecting ability allows you to draw two cards and place one into the Lost Zone
Kyurem has two alternate forms, White Kyurem and Black Kyurem, which are formed by combining with Reshiram and Zekrom, respectively