Description[Set] You may only [Set] one "R.F" on your field.<br>All "Mystic Knight" on your field cannot be [Rest] by your opponent's card effects.<br>[Counter][Act] During each player's attack phase, return up to one "Mystic Knight" monster from your field to hand. If you do, you may call a "Mystic Knight" monster with different card name from your hand to an open area by paying its [Call Cost]. You may only use this ability once per turn.