To activate Psydrive, you need to attach 4 Energy to a1-129-mewtwo-ex, which can be a tad tough to get, on top of that, every time you activate Psydrive, you're forced to discard two Psychic Energy from a1-129-mewtwo-ex, stopping you from reactivating it on the upcoming turn
Mechan Assembler reminds me a lot of Saruman the White, which looked really weak at first but ended up being a very strong build-around in the Lord of the Rings format
Card advantage is a little more important in this list than in pure control decks as a bunch of your cards do nothing immediately or directly
Together, it takes Dueling to the next level
It does come with an ability to help achieve this by paying mana and sacrificing a creature
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