The blue part of Gretchen gives you access to counterspells and extra card draws to see your key cards quickly
It is, however, quite pretty. Saprazzan vizier Illustrated by Gao Yan Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Looking at the current metagame, it seems that Modern is moving away from broadly useful cards, and leaning into sideboard haymakers
However, you can consider playing fewer than four copies of a card if: It gets worse in multiples (such as legendary creatures) It's only useful against certain matchups It's a win condition, and your control deck will have time to dig through the deck and find it You're stuck choosing between two cards which have equally strong, similar, but slightly different effects (you could play two of each) It's a slightly worse version of a card you have four copies of already, and you're including it because you want even more of that effect
We wanted these to fit into the draft archetype of that color
you can go for a mono-white good stuff deck