Magic is a hyper-dynamic game, like crypto
Each pack contains 10 game cards and 1 basic Energy
For example, if you cast an instant while Fire Lord Azula is attacking, it will trigger all of your cards with Magecraft
(2) You can banish this card from your GY, then target 3 Machine monsters amongst monsters you have banished or have in your GY
It's hard to identify a single game where Faerie Mastermind played a pivotal role, but I ended up running him in nearly every one of my blue decks and I was never sad to draw him
This list isn't gospel, you shouldn't run all of these cards in all of your decks, but you should be looking at them to take up those slots in the 99 that aren't just Wrath of God, Damnation, or any other yawn-inducing card that is generically good, but might not actually be the right fit for you.