Doors of Light and Dark

A doorway existed where none existed moments before... You enter to find two shimmering doorways and a well-dressed doorman. “Finally, a visitor! Please please! Choose a door, any door!” Are we still in the Spire? How is this place so clean? Dark Door Remove 1 card from your Deck. Or Light Door Upgrade 2 random cards.

Source: Untapped.gg. Full branch text may continue on the official detail page.