Smoke Spirits' Aid Wizards really needs to slow down on things that make a bajillion treasures, because it's contributing to the Commander format getting faster and faster
Some Lesson-focused decks, like the Jeskai Lessons deck, can be incredibly powerful, making them popular options.
Dont get me wrong, this is still an amazing blue instant
Mill your deck aggressively with cards like Syr Konrad, the Grim and River Kelpie, turning your graveyard into a toolkit for victory
With that being said, there are some interesting options that simply take too much effort to pull off unless you switch objectives and go for the best story
Q: Are these cards playable in tournaments