The TL;DR is were looking to abuse a bunch of landfall cards, both enablers and finishers

ENCHANTING TRADING CARD GAME: Dive into the magical world of Lorcana, beautifully capturing the essence of beloved Disney characters - An immersive journey of exploration and strategic gameplay ENGAGING & ACCESSIBLE: Designed for both beginners and seasoned players - Disney Lorcana offers a welcoming gameplay experience that combines simple learning with strategic depth - Suitable for ages 8 and up ARTISTIC TREASURE: Each set boasts over 200 pieces of stunning, original Disney artwork - Experience the largest collection of Disney art ever assembled in a single product COLLECT, TRADE & CHALLENGE: Embark on an epic adventure to build your ultimate deck, collect rare cards, and challenge Disney enthusiasts - A captivating experience for all HIGH-QUALITY COMPONENTS: Starter deck includes 60 cards (2 foil cards included), 11 damage counters, 1 paper playmat, 1 tracker token, rules sheet, and a bonus booster pack of 12 randomized cards - Everything you need for an exciting game

I'll be reading them
Even if you fail to use Essence Flux in this exact circumstance, one mana to save a creature from removal is a great cost that's sure to provide you with a mana advantage in most situations
EX/DP Era (2003-2011) 4-5 rarities: Addition of Pokemon-ex, Lv.X, and regular Secret Rares
If your cards are worth 10$ or more, then its worth it to you or your buyer to ship them safely in a top loader and a bubble mailer with tracking