This one gives you some burn right up front you can use for removal, or just to smack a planeswalker in the loyalty
White rarely gets free interaction, so Flawless Maneuver feels like a good way to catch opponents off guard and make sure that your creatures live to fight another day, or use it proactively to save your creatures from your own board wipe, which can be back-breaking for your foes
Flotsam and Jetsam Riffraff Amethyst already has a Flotsam/Jetsam combo, so why not give Emerald one
This is not a casual flip market
Generally speaking, since Magic is a card game at heart, perfectly recreating that experience on a computer screen will be impossible
Liesa, Shroud of Dusk can also shut down decks that monopolize game time by punishing players looking to cast their entire deck in one turn