Target 1 face-down monster on the field; destroy that target, and if you do, banish it, then, if it was a Flip monster, each player reveals their Main Deck, then banishes all cards from it with that monster's name.
Use The Shallow Graveyard so you and your opponent get to revive a monster from the graveyard face-down. Then use Nobleman of Crossout on your opponent's face-down monster, bonus if he selects a flip effect monster.
Destroys your face-down Monster Cards / Destroys your opponent's face-down Monster Cards
Banishes from your field / Banishes from your opponent's field / Banishes from your Deck / Banishes from your opponent's Deck
I think this card is overhyped to be honest. It is only good for Sylvan match up. Other match up not so good. Plus to truly counter sylvan one is not really enough to guarantee you the game often kumushroomo is set in the beginning of duel so does rose lover if you don't have nobleman there and there they still are likely to get the effect off. Prefer chalice to be honest.