Azors Gateway / Sanctum of the Sun Exiling the cards you dont want with Azor's Gateway can be a significant downside for decks relying on looting to fill the graveyard with resources, but decks interested in drawing and filtering dont care about exile versus discard
Force of Will is so powerful that it completely shifts entire formats
Warrior-based Decks will always have space for Reinforcement of the Army , and for very good reason as there are a lot of strong Warrior-type monsters that are essential in certain decks' combos
Broken or unfair cards become the diva that commands the show: When broken cards appear in formats, top decks are reduced to those playing the broken card, or the few cards that beat it
However, when it comes to playing straight ouf ot the box, you might struggle to get wins on the board
But it is not this day, so go and play with it