I'd place this around Bitterblossom in usefulness (costs more mana, but doesn't lose you life)
Pristine/Perfect Grades: Under CGCs system, a grade of 10 can have different distinctions
(It's worth mentioning that while you must do so before you attack, if you went first and your opponent has not ended his/her turn yet, you can interject and use any of these three cards before you start your turn because they are Quick-Play.) Preemptively guard your monsters from being destroyed by card effects In case you didn't recognize it from earlier, the middle monster in the screenshot against NCP Josh is Metamorphosed Insect Queen , an Insect monster that, provided that you have another Insect on the field, protects all of them from being targeted or destroyed by your opponent's card effects
The Stranger Things cards are legal only in Magics Eternal formats, meaning Legacy, Vintage, Commander, and the recently recognized Oathbreaker
Thats two cards for the price of one
Aetherspouts is one of the most disruptive board wipes in the format