Sandwich Day (MZMU-EN056) - (Super Rare) - Maze of Muertos 1st Edition

If you have a monster in your GY: Pay 200 LP; draw 1 card and reveal it, then, if it is a monster, apply this effect based on its Attribute.
• An Attribute not in your GY: Draw 1 card.
• An Attribute in your GY: Discard 1 card.
You can only activate 1 "Sandwich Day" per turn.