2 Apex Devastator Apex Devastator is proof that you don't need a complex textbox to make an elegant card
4 Flusterstorm No One Is Having A Good Time Keeping a counterspell up to protect your game-winning play is vital in plenty of decks, and if that combo involves casting more than a few spells, it might be worth your while to play a few copies of Flusterstorm in your list
Sage of the Falls starts an infinite combo easily
Wrapping Up Those are just three examples I picked from many, many conversations between Wizards and SQEX when developing this set
Not so bad in a Bloomburrow Draft and other MTG formats where you can run multiples, but Commander limits you a bit
And although the Magic Boomer in me wants to be sad about that, its probably for the best, as the game becomes more complex, to have everything right there in the card text