It was already a pretty good mechanic, but it didnt get a chance to shine in the main set
WU: Artifacts Matter The easy thing about drafting these colors is that its very clear which cards support your strategy (the ones that say artifact in the typeline or rules text), and there are lots of them
Meanwhile, stopping noncreature spells could mean that youre guaranteeing that nobody interferes with a big turn, or the chance to cut off a combo deck before it gets going
A counterspell for noncreatures at two mana that also prevents your opponents from casting noncreature spells for the rest of the turn feels pretty powerful, even though its not without its limitations
They are considered the exact same cards despite having different names, so you can only play one of them, not both
That is an incredible effect on a land that not only enters the battlefield untapped, but'll also provide Snow mana