As long as there are strong Psychic attackers in the game, Gardevoir will remain one of the most powerful and strategic cards in the meta
Being a creature is an advantage here because you can guarantee its resolution with Cavern of Souls
While other colors may excel in creating elaborate and efficient engines (until you wipe them from existence), White likes efficiently committing resources to the board and using those resources to move the game along
You cant even deck yourself since this is a replacement effect for drawing cards
You can tap the Goggles for 1 red mana, so they have a minor ability as a spell adjunct, and then, you gain a free Fork of something as well tacked on
Remember, your goal is to eliminate the seven stacks, so you want to put a lot of cards in the graveyard