pokemon card mega mewtwo ex M 64/162 XY Breakthrough Holo Rare Near Mi Psychic Rarity M Mewtwo EX (160/162) [XY:

Thus, sets like Space-Time Smackdown with two packs to open had two, and Triumphant Light has one

Many decks run 4 copies of Switch, and few run less than 2

There are tons of extremely powerful effects that become even better when doubled up, like Portal to Phyrexia's ability to force your opponents to sacrifice three creatures when it comes into play, now forcing all your opponents to sacrifice six creatures instead

It helps that this version of Vorinclex also limits the counters your opponents can make, which means their Planeswalkers are weaker, and you can hose any strategies that are trying to do the same thing as you