Clone-Away!

Clone-Away! is a trick in Plants vs. Zombies Heroes, added in Set 3. It costs 3 brains to play, and is in Beastly. When used, it destroys all copies of a card currently on the field except for one.

Card Information
''Hi, Hilly Bays here with the brand new Clone-Away! Tired of all those pesky Pineclones? Just one spray of this and they all go away! It's only 3 Brains too! What a shocking deal!''
 * Group Class - Beastly
 * Group Type - Trick
 * Effect - Destroy all copies of a card on the field except for one.
 * Rarity - Set 3|Super Rare

With
Clone-Away! can potentially change the entire tide of a round. It can either take out all copies of a plant you want gone and leave a weakened one left, take out the wrong copies, take out the correct copies but leave a buffed one alive, and more. Despite this, it's a must-have in case facing a Pineclone Deck or a Clique Peas Deck, able to take out all pineclones or clique peas except for one. However, Clone-Away! is a very situational card, and in some cases can be outshone by Weed Spray.

Against
There's not really a way to tell if your opponent is running Clone-Away! or not, so when facing a Beastly hero you should have a lot of caution filling the board with Clique Peas and Pineclones, or Pear Pairadise. Keep in mind that as long as only one copy of a plant is on the field, it cannot be Clone-Away!'d.

Trivia

 * The description is a reference to Billy Mays.