If you have more cards in your Deck than your opponent does: Send cards from the top of your Deck to the Graveyard so you have the same number of cards in the Deck as your opponent.
|How to Obtain?|
- If you're going to play Grass, it's best used in 30 card decks, so that when you face opponents playing 20 card decks, you can send 10+ cards to the grave.
- It is not advised to play Grass when you expect to face opposing 30 card decks (either the 30 card Grass mirror match or players using 30 card decks at lower ranks). Since decks will be the same size, Grass will be useless.