Using proxies is a personal decision that each player must make for themselves
At the start of the Damage Step, if your opponents monster battles, while you control a Labyrinth Wall card: You can banish this card from your GY
The catch with MDFCs is that there are no ways to transform it once you've played it
But usually, the deck contains all five colors, and features a rather motley crew - playing things like Meddling Mage, Reflector Mage, Kitesail Freebooter, and at some point Mantis Rider with payoffs like Thalia's Lieutenant and Champion of the Parish
Fairy Wind is a Trap card that destroys all face-up Spell/Traps on the field, and inflicts 300 damage to each player per destroyed card
Is PSY-Frame Multi-Threader legal to play