Forcing each player to shuffle their entire discard piles back into their decks, Lysandre's Trump Card effectively eliminated the possibility that a player would run out of cards, which would otherwise mean victory for their opponent
However, these decks need a way to replenish their resources after each attack
This ensures convenience and organization for storing and transporting your cards
You can carefully craft your draws with this broken black artifact, and a resolved Citadel is often enough to outright win with enough of a life buffer and some card filtration
cards in graveyard for mechanics like delve, escape, and delirium
So even if you arent trying to win exactly, drawing more cards lets you put your own janky, ridiculous plans into action