Find groups that have lots of followers, strict rules and that are private (my preference.) A good example of a really good Facebook group that I think is one of the more popular places to sell Magic cards is MTG Savage Sales (Magic: The Gathering.) They have over 12K members and the admins do a great job making sure the rules are being followed
Trouble in Pairs draws you a great many cards, in a color that is still a little lacking easy ways to draw more than one at a time, and its well, its really, really good
Special Summon 1 Level 7 or lower "Red-Eyes" monster from your Deck
Its unlikely well see this style in March of the Machine , but we couldnt deny it a place on this list all the same
Will works in traditional storm builds that cast rituals and tutors, then it recasts them to up the storm count
Twitter, Discord, Facebook, all of these are ways to make a connection and sell some cards to get the cash you need