Spiral Grass: Blocker (Whenever an opponent's creature attacks, you may tap this creature to stop the attack. Then the 2 creatures battle.) Whenever this creature blocks, untap it after it battles. Thanks to their especially keen senses, the Guardians were the first to react to the cataclysm.
Blocker (Whenever an opponent's creature attacks, you may tap this creature to stop the attack. Then the 2 creatures battle.)