[1] Although it applies to several collectible card games, the concept was first described early in the evolution of Magic: The Gathering strategy, where many early decks relied on a player drawing more cards than their opponent, and then using this advantage to play more cards and advance their position faster than their opponent.
As such, auras are seldom seen in competitive play unless they have some way of overcoming this inherent weakness.
When Eric “Dinosaur” Taylor originally pitched this concept, it was defined as “card advantage when no one loses cards.” The classic example for this is playing a Moat against an opponent's large number of creatures.
Although the cards have not been technically removed from play through a "sweeper" effect, the opponent no longer gains an advantage from the cards they have played because they cannot perform their function as intended.
As all games limit the number of cards of the same name that can be played, having access to any one card just by drawing can require a higher number of draws to achieve than is practical.