To make it easier to find art and oracle tags for a certain card type or strategy. A feature reminiscent of tagger.scryfall.com, where tags are listed in the card details overview.
Should allow for optimized card searching, as this would allow a deckbuilding process that does not require the user to leave the platform to find relevant otags.
All tags are already available through the Scryfall API, so it is a matter of disclosing them on the card details window.