pokemon nidoking card Team Rocket's ex Ultra Rare choose the strategic mind of Team Rocket’s Mewtwo ex Pokémon Pokémon Card Giovanni's Nidoking

The Mystery Booster 2 Playtest Card Notes section (reproduced here in individual Gatherer rulings) provides guidance for fitting these cards into the existing rules structure

Karn Liberated required a Force of Negation when tapped out

Specifically Elenda the Dusk Rose, Thalisse Reverent Medium and Tayam Luminous Enigma come to mind for this card, but this card will find a home in a lot of places as long as it fits into a backup plan or as a side piece to secure plan A with redundancy

deck instead of the standard 10

Expel the Interlopers A final decree that banishes the unworthy, ensuring that only the fortified and the strong endure

The last thing I want is for Mega Evolution to overshadow the next gimmick the way it's overshadowing Trainer's Pokmon cards.