The goal of blue-based control in Vintage, Gennari says in his video is "Basically you just bury your opponent in card advantage." How you win afterward is almost incidental
Its one of those cards that just says Hey, you know that thing youre doing
Sorcery speed is a bit of a drag, but if youre digging for something specific, Ponder is a great option
Of course, the dream is to hit a Carnosaur out of an Etali trigger, but at worst you can count on the former ability to kill pesky little creatures or planeswalkers by discarding it from your hand, which comes very handy when youre playing around counterspells other than Stifle
How this affects your grade: Edges accounts for a significant portion of the overall grade
they turn a typical game of Magic into a puzzle, where the level of importance shifts heavily across resources to provide a unique experience