It's not in every deck.
This is 2014, March already. If you still can't handle Account Siphon, you're not too good at this.>Astroscript are obviously too powerful, and would not get printed now.
Core set are always the best cards. It's made so you can play with just core, not buying anything else. Maybe another core.
You're challenging an entire game and its balance, you're gonna need a strong argument, rather than /v/-talk.>>30934938
As far as I know, you posted a source.