Visually grants Magdalene's hairstyle while the effect is active.
Notes
The effect does not stack with itself.
The card's effect persists in the Knife Piece 2 abandoned area.
The temporary heart containers granted by III - The Empress? can be spent for purposes such as devil deals and Potato Peeler, and doing so will not affect Isaac's permanent containers after the effect runs out.
The pop-up that appears whenever III - The Empress? is used.
Trivia
III - The Empress? will display a pop up saying "The morning sun has vanquished the horrible night", a reference to Castlevania II: Simon's Quest when night turns to day.
This is also a reference to Whore of Babylon's (and by extension III - The Empress') pop up being the day to night message in said game.