When used to full effect, the Alpha Deathclaw can lock your opponent out of being able to play for any spells at all
While you can tune engines to draw extra cards and control the game, some tactics are simply more consistent (bunnies can easily overwhelm an opponent, for example, thanks in part to the new Offspring mechanic)
What determines if they are a saint or a nasty is all in how you choose to play them
I, for one, aside from collecting cards, want to learn how to play the game
The codes will not grant the exact same cards that come in the physical boosters, but six randomized ones from the collection to which they belong
Later sets A Charizard Pokmon card from a later set will typically not be as valuable, but can still sell for a good price