This nine-mana artifact costs X less to cast, where X is the greatest power among creatures you control, and it can cost as little as two mana
Set: XY: Evolutions Type: Psychic Rarity: Ultra Rare Retreat cost: Colorless,Colorless
Here, the goal is to kill before being killed, thanks to Crackers, who has double attack if you have fewer life points than your opponent, Gedatsu, allowing board management and hitting for 6000 power, the Enel card with Rush for 7000 power, and Yamato, which helps control the board, recover a life point, and hit for 9000 power the next turn
Escarpment Fortress While I wouldnt say Escarpment Fortress is an exciting card, it does seem like a solid workhorse for aggressive decks that might otherwise be desperate for card draw